621240070972 has 12 divisors (see below), whose sum is σ = 1087176580336. Its totient is φ = 310618190880.

The previous prime is 621240070943. The next prime is 621240070991. The reversal of 621240070972 is 279070042126.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 536368 + ... + 1237000.

Almost surely, 2^621240070972 is an apocalyptic number.

It is an amenable number.

621240070972 is a deficient number, since it is larger than the sum of its proper divisors (465936509364).

621240070972 is a wasteful number, since it uses less digits than its factorization.

621240070972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922308 (or 922306 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 40.

The spelling of 621240070972 in words is "six hundred twenty-one billion, two hundred forty million, seventy thousand, nine hundred seventy-two".