51078887577 has 32 divisors (see below), whose sum is σ = 78984864000. Its totient is φ = 32562832896.

The previous prime is 51078887549. The next prime is 51078887591. The reversal of 51078887577 is 77578887015.

51078887577 is a `hidden beast` number, since 51 + 0 + 7 + 8 + 8 + 8 + 7 + 577 = 666.

It is not a de Polignac number, because 51078887577 - 2⁶ = 51078887513 is a prime.

It is a super-2 number, since 2×51078887577² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51078887507) 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 31 ways as a sum of consecutive naturals, for example, 2691273 + ... + 2710185.

It is an arithmetic number, because the mean of its divisors is an integer number (2468277000).

Almost surely, 2^51078887577 is an apocalyptic number.

It is an amenable number.

51078887577 is a deficient number, since it is larger than the sum of its proper divisors (27905976423).

51078887577 is a wasteful number, since it uses less digits than its factorization.

51078887577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23294 (or 23288 counting only the distinct ones).

The product of its (nonzero) digits is 30732800, while the sum is 63.

The spelling of 51078887577 in words is "fifty-one billion, seventy-eight million, eight hundred eighty-seven thousand, five hundred seventy-seven".