79955642907 has 24 divisors (see below), whose sum is σ = 132503875296. Its totient is φ = 45511151616.

The previous prime is 79955642881. The next prime is 79955642909. The reversal of 79955642907 is 70924655997.

79955642907 is a `hidden beast` number, since 79 + 9 + 556 + 4 + 2 + 9 + 0 + 7 = 666.

It is not a de Polignac number, because 79955642907 - 2¹² = 79955638811 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (79955642909) 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 23 ways as a sum of consecutive naturals, for example, 2452948 + ... + 2485329.

It is an arithmetic number, because the mean of its divisors is an integer number (5520994804).

Almost surely, 2^79955642907 is an apocalyptic number.

79955642907 is a deficient number, since it is larger than the sum of its proper divisors (52548232389).

79955642907 is a wasteful number, since it uses less digits than its factorization.

79955642907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4938547 (or 4938544 counting only the distinct ones).

The product of its (nonzero) digits is 42865200, while the sum is 63.

The spelling of 79955642907 in words is "seventy-nine billion, nine hundred fifty-five million, six hundred forty-two thousand, nine hundred seven".