16555515151564 has 6 divisors (see below), whose sum is σ = 28972151515244. Its totient is φ = 8277757575780.

The previous prime is 16555515151561. The next prime is 16555515151573. The reversal of 16555515151564 is 46515151555561.

It is not an unprimeable number, because it can be changed into a prime (16555515151561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2069439393942 + ... + 2069439393949.

Almost surely, 2^{16555515151564} is an apocalyptic number.

It is an amenable number.

16555515151564 is a deficient number, since it is larger than the sum of its proper divisors (12416636363680).

16555515151564 is a wasteful number, since it uses less digits than its factorization.

16555515151564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4138878787895 (or 4138878787893 counting only the distinct ones).

The product of its digits is 11250000, while the sum is 55.

The spelling of 16555515151564 in words is "sixteen trillion, five hundred fifty-five billion, five hundred fifteen million, one hundred fifty-one thousand, five hundred sixty-four".