20516163661301 has 12 divisors (see below), whose sum is σ = 25772370881376. Its totient is φ = 15986621034120.

The previous prime is 20516163661297. The next prime is 20516163661309. The reversal of 20516163661301 is 10316636161502.

It is not a de Polignac number, because 20516163661301 - 2² = 20516163661297 is a prime.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20516163661309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12111075695 + ... + 12111077388.

It is an arithmetic number, because the mean of its divisors is an integer number (2147697573448).

Almost surely, 2^{20516163661301} is an apocalyptic number.

It is an amenable number.

20516163661301 is a deficient number, since it is larger than the sum of its proper divisors (5256207220075).

20516163661301 is a wasteful number, since it uses less digits than its factorization.

20516163661301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24222153112 (or 24222153101 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 41.

The spelling of 20516163661301 in words is "twenty trillion, five hundred sixteen billion, one hundred sixty-three million, six hundred sixty-one thousand, three hundred one".