78861442602207 has 32 divisors (see below), whose sum is σ = 113273710018560. Its totient is φ = 48660198507360.

The previous prime is 78861442602193. The next prime is 78861442602211. The reversal of 78861442602207 is 70220624416887.

It is not a de Polignac number, because 78861442602207 - 2¹² = 78861442598111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78861442602227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14950798 + ... + 19525604.

It is an arithmetic number, because the mean of its divisors is an integer number (3539803438080).

Almost surely, 2^{78861442602207} is an apocalyptic number.

78861442602207 is a deficient number, since it is larger than the sum of its proper divisors (34412267416353).

78861442602207 is a wasteful number, since it uses less digits than its factorization.

78861442602207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4582923.

The product of its (nonzero) digits is 14450688, while the sum is 57.

The spelling of 78861442602207 in words is "seventy-eight trillion, eight hundred sixty-one billion, four hundred forty-two million, six hundred two thousand, two hundred seven".