20107177050561 has 16 divisors (see below), whose sum is σ = 26878262693568. Its totient is φ = 13370442624000.

The previous prime is 20107177050487. The next prime is 20107177050619. The reversal of 20107177050561 is 16505077170102.

It is not a de Polignac number, because 20107177050561 - 2¹¹ = 20107177048513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20107177050661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17273241 + ... + 18400521.

It is an arithmetic number, because the mean of its divisors is an integer number (1679891418348).

Almost surely, 2^{20107177050561} is an apocalyptic number.

It is an amenable number.

20107177050561 is a deficient number, since it is larger than the sum of its proper divisors (6771085643007).

20107177050561 is a wasteful number, since it uses less digits than its factorization.

20107177050561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142512.

The product of its (nonzero) digits is 102900, while the sum is 42.

The spelling of 20107177050561 in words is "twenty trillion, one hundred seven billion, one hundred seventy-seven million, fifty thousand, five hundred sixty-one".