652117621444 has 81 divisors (see below), whose sum is σ = 1224421169517. Its totient is φ = 303853938336.

The previous prime is 652117621433. The next prime is 652117621499. The reversal of 652117621444 is 444126711256.

The square root of 652117621444 is 807538.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 42906151044 + 609211470400 = 207138^2 + 780520^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 652117621444.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2424228942 + ... + 2424229210.

Almost surely, 2^652117621444 is an apocalyptic number.

652117621444 is the 807538-th square number.

It is an amenable number.

652117621444 is a deficient number, since it is larger than the sum of its proper divisors (572303548073).

652117621444 is an equidigital number, since it uses as much as digits as its factorization.

652117621444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738 (or 369 counting only the distinct ones).

The product of its digits is 322560, while the sum is 43.

The spelling of 652117621444 in words is "six hundred fifty-two billion, one hundred seventeen million, six hundred twenty-one thousand, four hundred forty-four".