16516051605 has 16 divisors (see below), whose sum is σ = 29361869760. Its totient is φ = 8808560784.

The previous prime is 16516051583. The next prime is 16516051613. The reversal of 16516051605 is 50615061561.

It is not a de Polignac number, because 16516051605 - 2²⁵ = 16482497173 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16516051605.

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, 61170427 + ... + 61170696.

It is an arithmetic number, because the mean of its divisors is an integer number (1835116860).

Almost surely, 2^16516051605 is an apocalyptic number.

16516051605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16516051605 is a deficient number, since it is larger than the sum of its proper divisors (12845818155).

16516051605 is a wasteful number, since it uses less digits than its factorization.

16516051605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122341137 (or 122341131 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The spelling of 16516051605 in words is "sixteen billion, five hundred sixteen million, fifty-one thousand, six hundred five".