51257315358 has 24 divisors (see below), whose sum is σ = 111134006568. Its totient is φ = 17074004112.

The previous prime is 51257315353. The next prime is 51257315359. The reversal of 51257315358 is 85351375215.

51257315358 is a `hidden beast` number, since 5 + 12 + 573 + 15 + 3 + 58 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51257315353) 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 11 ways as a sum of consecutive naturals, for example, 953760 + ... + 1006067.

It is an arithmetic number, because the mean of its divisors is an integer number (4630583607).

Almost surely, 2^51257315358 is an apocalyptic number.

51257315358 is an abundant number, since it is smaller than the sum of its proper divisors (59876691210).

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

51257315358 is a wasteful number, since it uses less digits than its factorization.

51257315358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1961288 (or 1961285 counting only the distinct ones).

The product of its digits is 630000, while the sum is 45.

The spelling of 51257315358 in words is "fifty-one billion, two hundred fifty-seven million, three hundred fifteen thousand, three hundred fifty-eight".