51623752077 has 12 divisors (see below), whose sum is σ = 78492254880. Its totient is φ = 32604474888.

The previous prime is 51623752067. The next prime is 51623752079. The reversal of 51623752077 is 77025732615.

51623752077 is a `hidden beast` number, since 51 + 6 + 2 + 3 + 7 + 520 + 77 = 666.

It is not a de Polignac number, because 51623752077 - 2⁸ = 51623751821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51623752079) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150946473 + ... + 150946814.

It is an arithmetic number, because the mean of its divisors is an integer number (6541021240).

Almost surely, 2^51623752077 is an apocalyptic number.

51623752077 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

It is an amenable number.

51623752077 is a deficient number, since it is larger than the sum of its proper divisors (26868502803).

51623752077 is a wasteful number, since it uses less digits than its factorization.

51623752077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301893312 (or 301893309 counting only the distinct ones).

The product of its (nonzero) digits is 617400, while the sum is 45.

The spelling of 51623752077 in words is "fifty-one billion, six hundred twenty-three million, seven hundred fifty-two thousand, seventy-seven".