72265631244 has 36 divisors (see below), whose sum is σ = 177961634424. Its totient is φ = 22820724288.

The previous prime is 72265631239. The next prime is 72265631261. The reversal of 72265631244 is 44213656227.

It is a junction number, because it is equal to n+sod(n) for n = 72265631196 and 72265631205.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8336577 + ... + 8345240.

It is an arithmetic number, because the mean of its divisors is an integer number (4943378734).

Almost surely, 2^72265631244 is an apocalyptic number.

It is an amenable number.

72265631244 is an abundant number, since it is smaller than the sum of its proper divisors (105696003180).

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

72265631244 is a wasteful number, since it uses less digits than its factorization.

72265631244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16681862 (or 16681841 counting only the distinct ones).

The product of its digits is 483840, while the sum is 42.

The spelling of 72265631244 in words is "seventy-two billion, two hundred sixty-five million, six hundred thirty-one thousand, two hundred forty-four".