16501536649472 has 36 divisors (see below), whose sum is σ = 37644130485696. Its totient is φ = 7072087134720.

The previous prime is 16501536649457. The next prime is 16501536649529. The reversal of 16501536649472 is 27494663510561.

It is a hoax number, since the sum of its digits (59) coincides with the sum of the digits of its distinct prime factors.

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, 4604221604 + ... + 4604225187.

Almost surely, 2^{16501536649472} is an apocalyptic number.

It is an amenable number.

16501536649472 is an abundant number, since it is smaller than the sum of its proper divisors (21142593836224).

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

16501536649472 is an frugal number, since it uses more digits than its factorization.

16501536649472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9208446814 (or 9208446800 counting only the distinct ones).

The product of its (nonzero) digits is 32659200, while the sum is 59.

The spelling of 16501536649472 in words is "sixteen trillion, five hundred one billion, five hundred thirty-six million, six hundred forty-nine thousand, four hundred seventy-two".