87568978207 has 2 divisors, whose sum is σ = 87568978208. Its totient is φ = 87568978206.

The previous prime is 87568978199. The next prime is 87568978247. The reversal of 87568978207 is 70287986578.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87568978207 - 2³ = 87568978199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87568978247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43784489103 + 43784489104.

It is an arithmetic number, because the mean of its divisors is an integer number (43784489104).

Almost surely, 2^87568978207 is an apocalyptic number.

87568978207 is a deficient number, since it is larger than the sum of its proper divisors (1).

87568978207 is an equidigital number, since it uses as much as digits as its factorization.

87568978207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 94832640, while the sum is 67.

The spelling of 87568978207 in words is "eighty-seven billion, five hundred sixty-eight million, nine hundred seventy-eight thousand, two hundred seven".