621242361604 has 24 divisors (see below), whose sum is σ = 1089640311480. Its totient is φ = 309917282304.

The previous prime is 621242361577. The next prime is 621242361631. The reversal of 621242361604 is 406163242126.

It is an interprime number because it is at equal distance from previous prime (621242361577) and next prime (621242361631).

It can be written as a sum of positive squares in 4 ways, for example, as 225148352004 + 396094009600 = 474498^2 + 629360^2 .

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, 3380472 + ... + 3559504.

It is an arithmetic number, because the mean of its divisors is an integer number (45401679645).

Almost surely, 2^621242361604 is an apocalyptic number.

It is an amenable number.

621242361604 is a deficient number, since it is larger than the sum of its proper divisors (468397949876).

621242361604 is a wasteful number, since it uses less digits than its factorization.

621242361604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180999 (or 180997 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 37.

The spelling of 621242361604 in words is "six hundred twenty-one billion, two hundred forty-two million, three hundred sixty-one thousand, six hundred four".