51078893679 has 32 divisors (see below), whose sum is σ = 82584852480. Its totient is φ = 30944491200.

The previous prime is 51078893659. The next prime is 51078893711. The reversal of 51078893679 is 97639887015.

51078893679 is a `hidden beast` number, since 510 + 7 + 8 + 89 + 36 + 7 + 9 = 666.

It is not a de Polignac number, because 51078893679 - 2⁸ = 51078893423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51078893609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 736339 + ... + 802715.

It is an arithmetic number, because the mean of its divisors is an integer number (2580776640).

Almost surely, 2^51078893679 is an apocalyptic number.

51078893679 is a deficient number, since it is larger than the sum of its proper divisors (31505958801).

51078893679 is a wasteful number, since it uses less digits than its factorization.

51078893679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68988 (or 68982 counting only the distinct ones).

The product of its (nonzero) digits is 22861440, while the sum is 63.

The spelling of 51078893679 in words is "fifty-one billion, seventy-eight million, eight hundred ninety-three thousand, six hundred seventy-nine".