72239206970 has 24 divisors (see below), whose sum is σ = 151260054804. Its totient is φ = 24767727936.

The previous prime is 72239206961. The next prime is 72239206979. The reversal of 72239206970 is 7960293227.

It is an interprime number because it is at equal distance from previous prime (72239206961) and next prime (72239206979).

It can be written as a sum of positive squares in 2 ways, for example, as 70595958601 + 1643248369 = 265699^2 + 40537^2 .

It is not an unprimeable number, because it can be changed into a prime (72239206979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73712987 + ... + 73713966.

Almost surely, 2^72239206970 is an apocalyptic number.

72239206970 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72239206970 is an abundant number, since it is smaller than the sum of its proper divisors (79020847834).

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

72239206970 is a wasteful number, since it uses less digits than its factorization.

72239206970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147426974 (or 147426967 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 47.

The spelling of 72239206970 in words is "seventy-two billion, two hundred thirty-nine million, two hundred six thousand, nine hundred seventy".