51745204392 has 32 divisors (see below), whose sum is σ = 147843441600. Its totient is φ = 14784344064.

The previous prime is 51745204391. The next prime is 51745204403. The reversal of 51745204392 is 29340254715.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (51745204391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154003417 + ... + 154003752.

It is an arithmetic number, because the mean of its divisors is an integer number (4620107550).

Almost surely, 2^51745204392 is an apocalyptic number.

It is an amenable number.

51745204392 is an abundant number, since it is smaller than the sum of its proper divisors (96098237208).

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

51745204392 is a wasteful number, since it uses less digits than its factorization.

51745204392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308007185 (or 308007181 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 42.

The spelling of 51745204392 in words is "fifty-one billion, seven hundred forty-five million, two hundred four thousand, three hundred ninety-two".