16501277512664 has 16 divisors (see below), whose sum is σ = 35359880384400. Its totient is φ = 7071976076832.

The previous prime is 16501277512639. The next prime is 16501277512667. The reversal of 16501277512664 is 46621577210561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16501277512667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147332834879 + ... + 147332834990.

It is an arithmetic number, because the mean of its divisors is an integer number (2209992524025).

Almost surely, 2^{16501277512664} is an apocalyptic number.

16501277512664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16501277512664 is an abundant number, since it is smaller than the sum of its proper divisors (18858602871736).

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

16501277512664 is a wasteful number, since it uses less digits than its factorization.

16501277512664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294665669882 (or 294665669878 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 53.

The spelling of 16501277512664 in words is "sixteen trillion, five hundred one billion, two hundred seventy-seven million, five hundred twelve thousand, six hundred sixty-four".