69149839872 has 80 divisors (see below), whose sum is σ = 184813117632. Its totient is φ = 22975672320.

The previous prime is 69149839831. The next prime is 69149839919. The reversal of 69149839872 is 27893894196.

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, 405318 + ... + 550074.

Almost surely, 2^69149839872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69149839872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92406558816).

69149839872 is an abundant number, since it is smaller than the sum of its proper divisors (115663277760).

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

69149839872 is a wasteful number, since it uses less digits than its factorization.

69149839872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145089 (or 145073 counting only the distinct ones).

The product of its digits is 47029248, while the sum is 66.

The spelling of 69149839872 in words is "sixty-nine billion, one hundred forty-nine million, eight hundred thirty-nine thousand, eight hundred seventy-two".