712521556428 has 48 divisors (see below), whose sum is σ = 1813741816320. Its totient is φ = 215909601600.

The previous prime is 712521556333. The next prime is 712521556459. The reversal of 712521556428 is 824655125217.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7730173 + ... + 7821803.

It is an arithmetic number, because the mean of its divisors is an integer number (37786287840).

Almost surely, 2^712521556428 is an apocalyptic number.

It is an amenable number.

712521556428 is an abundant number, since it is smaller than the sum of its proper divisors (1101220259892).

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

712521556428 is a wasteful number, since it uses less digits than its factorization.

712521556428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150558 (or 150556 counting only the distinct ones).

The product of its digits is 1344000, while the sum is 48.

The spelling of 712521556428 in words is "seven hundred twelve billion, five hundred twenty-one million, five hundred fifty-six thousand, four hundred twenty-eight".