84958865138 has 16 divisors (see below), whose sum is σ = 146485644480. Its totient is φ = 36200473296.

The previous prime is 84958865137. The next prime is 84958865149. The reversal of 84958865138 is 83156885948.

It is not an unprimeable number, because it can be changed into a prime (84958865137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17536568 + ... + 17541411.

It is an arithmetic number, because the mean of its divisors is an integer number (9155352780).

Almost surely, 2^84958865138 is an apocalyptic number.

84958865138 is a deficient number, since it is larger than the sum of its proper divisors (61526779342).

84958865138 is a wasteful number, since it uses less digits than its factorization.

84958865138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35078161.

The product of its digits is 66355200, while the sum is 65.

The spelling of 84958865138 in words is "eighty-four billion, nine hundred fifty-eight million, eight hundred sixty-five thousand, one hundred thirty-eight".