78566885158102 has 16 divisors (see below), whose sum is σ = 128568004780032. Its totient is φ = 35711106391720.

The previous prime is 78566885158061. The next prime is 78566885158189. The reversal of 78566885158102 is 20185158866587.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54985318 + ... + 56396089.

It is an arithmetic number, because the mean of its divisors is an integer number (8035500298752).

Almost surely, 2^{78566885158102} is an apocalyptic number.

78566885158102 is a deficient number, since it is larger than the sum of its proper divisors (50001119621930).

78566885158102 is a wasteful number, since it uses less digits than its factorization.

78566885158102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111413483.

The product of its (nonzero) digits is 258048000, while the sum is 70.

The spelling of 78566885158102 in words is "seventy-eight trillion, five hundred sixty-six billion, eight hundred eighty-five million, one hundred fifty-eight thousand, one hundred two".