Search a number
-
+
51380468495 = 539725884367
BaseRepresentation
bin101111110110100000…
…111011101100001111
311220121210102020101122
4233312200323230033
51320211344442440
635334233431155
73466153530146
oct576640735417
9156553366348
1051380468495
111a876a31504
129b5b26b4bb
134acaa703a5
1426b5bda75d
15150ab7c7b5
hexbf683bb0f

51380468495 has 8 divisors (see below), whose sum is σ = 61811870784. Its totient is φ = 41000835744.

The previous prime is 51380468473. The next prime is 51380468563. The reversal of 51380468495 is 59486408315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51380468495 - 26 = 51380468431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12940199 + ... + 12944168.

It is an arithmetic number, because the mean of its divisors is an integer number (7726483848).

Almost surely, 251380468495 is an apocalyptic number.

51380468495 is a deficient number, since it is larger than the sum of its proper divisors (10431402289).

51380468495 is a wasteful number, since it uses less digits than its factorization.

51380468495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25884769.

The product of its (nonzero) digits is 4147200, while the sum is 53.

The spelling of 51380468495 in words is "fifty-one billion, three hundred eighty million, four hundred sixty-eight thousand, four hundred ninety-five".

Divisors: 1 5 397 1985 25884367 129421835 10276093699 51380468495