78502052156122 has 16 divisors (see below), whose sum is σ = 134578210519872. Its totient is φ = 33642920646720.

The previous prime is 78502052156117. The next prime is 78502052156167. The reversal of 78502052156122 is 22165125020587.

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, 67401279 + ... + 68556082.

It is an arithmetic number, because the mean of its divisors is an integer number (8411138157492).

Almost surely, 2^{78502052156122} is an apocalyptic number.

78502052156122 is a deficient number, since it is larger than the sum of its proper divisors (56076158363750).

78502052156122 is a wasteful number, since it uses less digits than its factorization.

78502052156122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135998613.

The product of its (nonzero) digits is 672000, while the sum is 46.

The spelling of 78502052156122 in words is "seventy-eight trillion, five hundred two billion, fifty-two million, one hundred fifty-six thousand, one hundred twenty-two".