20112961177 has 2 divisors, whose sum is σ = 20112961178. Its totient is φ = 20112961176.

The previous prime is 20112961117. The next prime is 20112961213. The reversal of 20112961177 is 77116921102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17230237696 + 2882723481 = 131264^2 + 53691^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20112961177 is a prime.

It is not a weakly prime, because it can be changed into another prime (20112961117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056480588 + 10056480589.

It is an arithmetic number, because the mean of its divisors is an integer number (10056480589).

Almost surely, 2^20112961177 is an apocalyptic number.

It is an amenable number.

20112961177 is a deficient number, since it is larger than the sum of its proper divisors (1).

20112961177 is an equidigital number, since it uses as much as digits as its factorization.

20112961177 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 37.

The spelling of 20112961177 in words is "twenty billion, one hundred twelve million, nine hundred sixty-one thousand, one hundred seventy-seven".