78922477422987 has 32 divisors (see below), whose sum is σ = 123024974999040. Its totient is φ = 44515615921920.

The previous prime is 78922477422977. The next prime is 78922477423019.

78922477422987 is nontrivially palindromic in base 10.

78922477422987 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 78922477422987 - 2²⁷ = 78922343205259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78922477422907) 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, 1405136562 + ... + 1405192727.

It is an arithmetic number, because the mean of its divisors is an integer number (3844530468720).

Almost surely, 2^{78922477422987} is an apocalyptic number.

78922477422987 is a deficient number, since it is larger than the sum of its proper divisors (44102497576053).

78922477422987 is a wasteful number, since it uses less digits than its factorization.

78922477422987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2810329363.

The product of its digits is 3186376704, while the sum is 78.

The spelling of 78922477422987 in words is "seventy-eight trillion, nine hundred twenty-two billion, four hundred seventy-seven million, four hundred twenty-two thousand, nine hundred eighty-seven".