2309579529972 has 72 divisors (see below), whose sum is σ = 6379118423328. Its totient is φ = 646036226880.

The previous prime is 2309579529967. The next prime is 2309579529979. The reversal of 2309579529972 is 2799259759032.

It is a junction number, because it is equal to n+sod(n) for n = 2309579529897 and 2309579529906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2309579529979) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61158798 + ... + 61196549.

Almost surely, 2^{2309579529972} is an apocalyptic number.

2309579529972 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2309579529972 is an abundant number, since it is smaller than the sum of its proper divisors (4069538893356).

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

2309579529972 is a wasteful number, since it uses less digits than its factorization.

2309579529972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122355389 (or 122355376 counting only the distinct ones).

The product of its (nonzero) digits is 192893400, while the sum is 69.

The spelling of 2309579529972 in words is "two trillion, three hundred nine billion, five hundred seventy-nine million, five hundred twenty-nine thousand, nine hundred seventy-two".