51877916566894 has 16 divisors (see below), whose sum is σ = 85360148009136. Its totient is φ = 23450590108800.

The previous prime is 51877916566877. The next prime is 51877916566919. The reversal of 51877916566894 is 49866561977815.

It is a super-2 number, since 2×51877916566894² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6514048827 + ... + 6514056790.

It is an arithmetic number, because the mean of its divisors is an integer number (5335009250571).

Almost surely, 2^{51877916566894} is an apocalyptic number.

51877916566894 is a deficient number, since it is larger than the sum of its proper divisors (33482231442242).

51877916566894 is a wasteful number, since it uses less digits than its factorization.

51877916566894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13028105811.

The product of its digits is 5486745600, while the sum is 82.

The spelling of 51877916566894 in words is "fifty-one trillion, eight hundred seventy-seven billion, nine hundred sixteen million, five hundred sixty-six thousand, eight hundred ninety-four".