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51102415470 = 2351703413849
BaseRepresentation
bin101111100101111100…
…001111101001101110
311212220102012200100110
4233211330033221232
51314124204243340
635250502040450
73456236236011
oct574574175156
9155812180313
1051102415470
111a743a88117
129aa2119126
134a85287c82
14268acdb378
1514e1556680
hexbe5f0fa6e

51102415470 has 16 divisors (see below), whose sum is σ = 122645797200. Its totient is φ = 13627310784.

The previous prime is 51102415451. The next prime is 51102415477. The reversal of 51102415470 is 7451420115.

It is a super-2 number, since 2×511024154702 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 1703413849 = 51102415470 / (5 + 1 + 1 + 0 + 2 + 4 + 1 + 5 + 4 + 7 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51102415477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 851706895 + ... + 851706954.

It is an arithmetic number, because the mean of its divisors is an integer number (7665362325).

Almost surely, 251102415470 is an apocalyptic number.

51102415470 is an abundant number, since it is smaller than the sum of its proper divisors (71543381730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51102415470 is a wasteful number, since it uses less digits than its factorization.

51102415470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1703413859.

The product of its (nonzero) digits is 5600, while the sum is 30.

Adding to 51102415470 its reverse (7451420115), we get a palindrome (58553835585).

The spelling of 51102415470 in words is "fifty-one billion, one hundred two million, four hundred fifteen thousand, four hundred seventy".

Divisors: 1 2 3 5 6 10 15 30 1703413849 3406827698 5110241547 8517069245 10220483094 17034138490 25551207735 51102415470