610038720621 has 48 divisors (see below), whose sum is σ = 963015505920. Its totient is φ = 369051012000.

The previous prime is 610038720601. The next prime is 610038720623. The reversal of 610038720621 is 126027830016.

610038720621 is a `hidden beast` number, since 6 + 1 + 0 + 0 + 3 + 8 + 7 + 20 + 621 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-610038720621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (610038720623) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 236539510 + ... + 236542088.

It is an arithmetic number, because the mean of its divisors is an integer number (20062823040).

Almost surely, 2^610038720621 is an apocalyptic number.

It is an amenable number.

610038720621 is a deficient number, since it is larger than the sum of its proper divisors (352976785299).

610038720621 is a wasteful number, since it uses less digits than its factorization.

610038720621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5998 (or 5995 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The spelling of 610038720621 in words is "six hundred ten billion, thirty-eight million, seven hundred twenty thousand, six hundred twenty-one".