726538931980 has 24 divisors (see below), whose sum is σ = 1578343198320. Its totient is φ = 280594345920.

The previous prime is 726538931947. The next prime is 726538931999. The reversal of 726538931980 is 89139835627.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 626326086 + ... + 626327245.

It is an arithmetic number, because the mean of its divisors is an integer number (65764299930).

Almost surely, 2^726538931980 is an apocalyptic number.

It is an amenable number.

726538931980 is an abundant number, since it is smaller than the sum of its proper divisors (851804266340).

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

726538931980 is a wasteful number, since it uses less digits than its factorization.

726538931980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252653369 (or 1252653367 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 61.

The spelling of 726538931980 in words is "seven hundred twenty-six billion, five hundred thirty-eight million, nine hundred thirty-one thousand, nine hundred eighty".