51152323257 has 16 divisors (see below), whose sum is σ = 86607108480. Its totient is φ = 29229898896.

The previous prime is 51152323253. The next prime is 51152323291. The reversal of 51152323257 is 75232325115.

51152323257 is a `hidden beast` number, since 51 + 1 + 523 + 2 + 32 + 57 = 666.

It is not a de Polignac number, because 51152323257 - 2² = 51152323253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51152323253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135323418 + ... + 135323795.

It is an arithmetic number, because the mean of its divisors is an integer number (5412944280).

Almost surely, 2^51152323257 is an apocalyptic number.

It is an amenable number.

51152323257 is a deficient number, since it is larger than the sum of its proper divisors (35454785223).

51152323257 is a wasteful number, since it uses less digits than its factorization.

51152323257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270647229 (or 270647223 counting only the distinct ones).

The product of its digits is 63000, while the sum is 36.

The spelling of 51152323257 in words is "fifty-one billion, one hundred fifty-two million, three hundred twenty-three thousand, two hundred fifty-seven".