7211990064 has 20 divisors (see below), whose sum is σ = 18630974456. Its totient is φ = 2403996672.

The previous prime is 7211990047. The next prime is 7211990083. The reversal of 7211990064 is 4600991127.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75124849 + ... + 75124944.

Almost surely, 2^7211990064 is an apocalyptic number.

It is an amenable number.

7211990064 is an abundant number, since it is smaller than the sum of its proper divisors (11418984392).

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

7211990064 is a wasteful number, since it uses less digits than its factorization.

7211990064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150249804 (or 150249798 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 7211990064 is about 84923.4364825164. The cubic root of 7211990064 is about 1932.0500524992.

The spelling of 7211990064 in words is "seven billion, two hundred eleven million, nine hundred ninety thousand, sixty-four".