69780272736 has 96 divisors (see below), whose sum is σ = 186037326720. Its totient is φ = 22896884736.

The previous prime is 69780272701. The next prime is 69780272767. The reversal of 69780272736 is 63727208796.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×69780272736² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12262980 + ... + 12268668.

It is an arithmetic number, because the mean of its divisors is an integer number (1937888820).

Almost surely, 2^69780272736 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 69780272736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93018663360).

69780272736 is an abundant number, since it is smaller than the sum of its proper divisors (116257053984).

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

69780272736 is a wasteful number, since it uses less digits than its factorization.

69780272736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7676 (or 7668 counting only the distinct ones).

The product of its (nonzero) digits is 10668672, while the sum is 57.

The spelling of 69780272736 in words is "sixty-nine billion, seven hundred eighty million, two hundred seventy-two thousand, seven hundred thirty-six".