16501551606606 has 32 divisors (see below), whose sum is σ = 36003642048000. Its totient is φ = 5000434527680.

The previous prime is 16501551606493. The next prime is 16501551606613. The reversal of 16501551606606 is 60660615510561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9312955 + ... + 10942313.

It is an arithmetic number, because the mean of its divisors is an integer number (1125113814000).

Almost surely, 2^{16501551606606} is an apocalyptic number.

16501551606606 is an abundant number, since it is smaller than the sum of its proper divisors (19502090441394).

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

16501551606606 is a wasteful number, since it uses less digits than its factorization.

16501551606606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782824.

The product of its (nonzero) digits is 972000, while the sum is 48.

The spelling of 16501551606606 in words is "sixteen trillion, five hundred one billion, five hundred fifty-one million, six hundred six thousand, six hundred six".