51657274887045 has 16 divisors (see below), whose sum is σ = 83129394966912. Its totient is φ = 27391294890560.

The previous prime is 51657274886993. The next prime is 51657274887077. The reversal of 51657274887045 is 54078847275615.

It is not a de Polignac number, because 51657274887045 - 2⁴¹ = 49458251631493 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9953229561 + ... + 9953234750.

It is an arithmetic number, because the mean of its divisors is an integer number (5195587185432).

Almost surely, 2^{51657274887045} is an apocalyptic number.

It is an amenable number.

51657274887045 is a deficient number, since it is larger than the sum of its proper divisors (31472120079867).

51657274887045 is a wasteful number, since it uses less digits than its factorization.

51657274887045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19906464492.

The product of its (nonzero) digits is 526848000, while the sum is 69.

The spelling of 51657274887045 in words is "fifty-one trillion, six hundred fifty-seven billion, two hundred seventy-four million, eight hundred eighty-seven thousand, forty-five".