72472423780 has 12 divisors (see below), whose sum is σ = 152192089980. Its totient is φ = 28988969504.

The previous prime is 72472423739. The next prime is 72472423799. The reversal of 72472423780 is 8732427427.

It can be written as a sum of positive squares in 2 ways, for example, as 29679709284 + 42792714496 = 172278^2 + 206864^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72472423780.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1811810575 + ... + 1811810614.

It is an arithmetic number, because the mean of its divisors is an integer number (12682674165).

Almost surely, 2^72472423780 is an apocalyptic number.

It is an amenable number.

72472423780 is an abundant number, since it is smaller than the sum of its proper divisors (79719666200).

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

72472423780 is a wasteful number, since it uses less digits than its factorization.

72472423780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3623621198 (or 3623621196 counting only the distinct ones).

The product of its (nonzero) digits is 1053696, while the sum is 46.

The spelling of 72472423780 in words is "seventy-two billion, four hundred seventy-two million, four hundred twenty-three thousand, seven hundred eighty".