68122572498 has 18 divisors (see below), whose sum is σ = 147601306359. Its totient is φ = 22707155052.

The previous prime is 68122572493. The next prime is 68122572503. The reversal of 68122572498 is 89427522186.

68122572498 is a `hidden beast` number, since 6 + 8 + 1 + 22 + 572 + 49 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (68122572493) and next prime (68122572503).

It can be written as a sum of positive squares in only one way, i.e., 34061286249 + 34061286249 = 184557^2 + 184557^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=184557.

It is not an unprimeable number, because it can be changed into a prime (68122572491) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1076583 + ... + 1138101.

Almost surely, 2^68122572498 is an apocalyptic number.

68122572498 is an abundant number, since it is smaller than the sum of its proper divisors (79478733861).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68122572498 is an frugal number, since it uses more digits than its factorization.

68122572498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123046 (or 61524 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The spelling of 68122572498 in words is "sixty-eight billion, one hundred twenty-two million, five hundred seventy-two thousand, four hundred ninety-eight".