621693851140 has 24 divisors (see below), whose sum is σ = 1305593372160. Its totient is φ = 248670629088.

The previous prime is 621693851111. The next prime is 621693851153. The reversal of 621693851140 is 41158396126.

621693851140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 339229 + ... + 1165531.

It is an arithmetic number, because the mean of its divisors is an integer number (54399723840).

Almost surely, 2^621693851140 is an apocalyptic number.

It is an amenable number.

621693851140 is an abundant number, since it is smaller than the sum of its proper divisors (683899521020).

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

621693851140 is a wasteful number, since it uses less digits than its factorization.

621693851140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863931 (or 863929 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 46.

The spelling of 621693851140 in words is "six hundred twenty-one billion, six hundred ninety-three million, eight hundred fifty-one thousand, one hundred forty".