20516317114556 has 12 divisors (see below), whose sum is σ = 37793215737480. Its totient is φ = 9718255475280.

The previous prime is 20516317114549. The next prime is 20516317114577. The reversal of 20516317114556 is 65541171361502.

It is a self number, because there is not a number n which added to its sum of digits gives 20516317114556.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134975770415 + ... + 134975770566.

It is an arithmetic number, because the mean of its divisors is an integer number (3149434644790).

Almost surely, 2^{20516317114556} is an apocalyptic number.

It is an amenable number.

20516317114556 is a deficient number, since it is larger than the sum of its proper divisors (17276898622924).

20516317114556 is a wasteful number, since it uses less digits than its factorization.

20516317114556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269951541004 (or 269951541002 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 47.

The spelling of 20516317114556 in words is "twenty trillion, five hundred sixteen billion, three hundred seventeen million, one hundred fourteen thousand, five hundred fifty-six".