16516601516 has 24 divisors (see below), whose sum is σ = 29583297744. Its totient is φ = 8064322560.

The previous prime is 16516601503. The next prime is 16516601527. The reversal of 16516601516 is 61510661561.

It is a self number, because there is not a number n which added to its sum of digits gives 16516601516.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 940916 + ... + 958308.

It is an arithmetic number, because the mean of its divisors is an integer number (1232637406).

Almost surely, 2^16516601516 is an apocalyptic number.

It is an amenable number.

16516601516 is a deficient number, since it is larger than the sum of its proper divisors (13066696228).

16516601516 is a wasteful number, since it uses less digits than its factorization.

16516601516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22961 (or 22959 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 38.

The spelling of 16516601516 in words is "sixteen billion, five hundred sixteen million, six hundred one thousand, five hundred sixteen".