16506963795072 has 64 divisors (see below), whose sum is σ = 43920563528160. Its totient is φ = 5493042401280.

The previous prime is 16506963795031. The next prime is 16506963795073. The reversal of 16506963795072 is 27059736960561.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×16506963795072² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16506963794994 and 16506963795012.

It is not an unprimeable number, because it can be changed into a prime (16506963795073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36017554 + ... + 36472977.

Almost surely, 2^{16506963795072} is an apocalyptic number.

16506963795072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16506963795072 is an abundant number, since it is smaller than the sum of its proper divisors (27413599733088).

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

16506963795072 is an equidigital number, since it uses as much as digits as its factorization.

16506963795072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72491141 (or 72491129 counting only the distinct ones).

The product of its (nonzero) digits is 128595600, while the sum is 66.

The spelling of 16506963795072 in words is "sixteen trillion, five hundred six billion, nine hundred sixty-three million, seven hundred ninety-five thousand, seventy-two".