69486638879 has 32 divisors (see below), whose sum is σ = 83295696000. Its totient is φ = 57900407040.

The previous prime is 69486638873. The next prime is 69486638929. The reversal of 69486638879 is 97883668496.

It is a happy number.

It is not a de Polignac number, because 69486638879 - 2⁴ = 69486638863 is a prime.

It is a super-3 number, since 3×69486638879³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69486638873) 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, 26510189 + ... + 26512809.

It is an arithmetic number, because the mean of its divisors is an integer number (2602990500).

Almost surely, 2^69486638879 is an apocalyptic number.

69486638879 is a deficient number, since it is larger than the sum of its proper divisors (13809057121).

69486638879 is a wasteful number, since it uses less digits than its factorization.

69486638879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4768 (or 4754 counting only the distinct ones).

The product of its digits is 752467968, while the sum is 74.

The spelling of 69486638879 in words is "sixty-nine billion, four hundred eighty-six million, six hundred thirty-eight thousand, eight hundred seventy-nine".