621709317472 has 12 divisors (see below), whose sum is σ = 1223990218836. Its totient is φ = 310854658720.

The previous prime is 621709317451. The next prime is 621709317487. The reversal of 621709317472 is 274713907126.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9714208054 + ... + 9714208117.

It is an arithmetic number, because the mean of its divisors is an integer number (101999184903).

Almost surely, 2^621709317472 is an apocalyptic number.

It is an amenable number.

621709317472 is a deficient number, since it is larger than the sum of its proper divisors (602280901364).

621709317472 is a wasteful number, since it uses less digits than its factorization.

621709317472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19428416181 (or 19428416173 counting only the distinct ones).

The product of its (nonzero) digits is 889056, while the sum is 49.

The spelling of 621709317472 in words is "six hundred twenty-one billion, seven hundred nine million, three hundred seventeen thousand, four hundred seventy-two".