16631970720 has 96 divisors (see below), whose sum is σ = 55148143680. Its totient is φ = 4201758720.

The previous prime is 16631970709. The next prime is 16631970727. The reversal of 16631970720 is 2707913661.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-4 number, since 4×16631970720⁴ (a number of 42 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (16631970727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 902721 + ... + 920960.

It is an arithmetic number, because the mean of its divisors is an integer number (574459830).

Almost surely, 2^16631970720 is an apocalyptic number.

16631970720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16631970720 is an abundant number, since it is smaller than the sum of its proper divisors (38516172960).

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

16631970720 is a wasteful number, since it uses less digits than its factorization.

16631970720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1823718 (or 1823710 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 42.

The spelling of 16631970720 in words is "sixteen billion, six hundred thirty-one million, nine hundred seventy thousand, seven hundred twenty".