51015734257 has 8 divisors (see below), whose sum is σ = 52664015360. Its totient is φ = 49367616480.

The previous prime is 51015734249. The next prime is 51015734291. The reversal of 51015734257 is 75243751015.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51015734257 - 2³ = 51015734249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51015734207) 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 7 ways as a sum of consecutive naturals, for example, 1103044 + ... + 1148362.

It is an arithmetic number, because the mean of its divisors is an integer number (6583001920).

Almost surely, 2^51015734257 is an apocalyptic number.

It is an amenable number.

51015734257 is a deficient number, since it is larger than the sum of its proper divisors (1648281103).

51015734257 is a wasteful number, since it uses less digits than its factorization.

51015734257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81663.

The product of its (nonzero) digits is 147000, while the sum is 40.

The spelling of 51015734257 in words is "fifty-one billion, fifteen million, seven hundred thirty-four thousand, two hundred fifty-seven".