51013804850 has 24 divisors (see below), whose sum is σ = 100467189108. Its totient is φ = 19205196800.

The previous prime is 51013804823. The next prime is 51013804859. The reversal of 51013804850 is 5840831015.

It can be written as a sum of positive squares in 6 ways, for example, as 17368340521 + 33645464329 = 131789^2 + 183427^2 .

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 51013804850.

It is not an unprimeable number, because it can be changed into a prime (51013804859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30007271 + ... + 30008970.

Almost surely, 2^51013804850 is an apocalyptic number.

51013804850 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51013804850 is a deficient number, since it is larger than the sum of its proper divisors (49453384258).

51013804850 is a wasteful number, since it uses less digits than its factorization.

51013804850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60016270 (or 60016265 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 35.

The spelling of 51013804850 in words is "fifty-one billion, thirteen million, eight hundred four thousand, eight hundred fifty".