51385793000 has 32 divisors (see below), whose sum is σ = 120242757960. Its totient is φ = 20554316800.

The previous prime is 51385792993. The next prime is 51385793009. The reversal of 51385793000 is 39758315.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2081366884 + 49304426116 = 45622^2 + 222046^2 .

It is not an unprimeable number, because it can be changed into a prime (51385793009) 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, 25691897 + ... + 25693896.

Almost surely, 2^51385793000 is an apocalyptic number.

51385793000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51385793000 is an abundant number, since it is smaller than the sum of its proper divisors (68856964960).

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

51385793000 is a wasteful number, since it uses less digits than its factorization.

51385793000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51385814 (or 51385800 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 41.

The spelling of 51385793000 in words is "fifty-one billion, three hundred eighty-five million, seven hundred ninety-three thousand".