20110119998977 has 2 divisors, whose sum is σ = 20110119998978. Its totient is φ = 20110119998976.

The previous prime is 20110119998939. The next prime is 20110119999043. The reversal of 20110119998977 is 77989991101102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12835280708496 + 7274839290481 = 3582636^2 + 2697191^2 .

It is a cyclic number.

It is not a de Polignac number, because 20110119998977 - 2³⁵ = 20075760260609 is a prime.

It is not a weakly prime, because it can be changed into another prime (20110119998377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055059999488 + 10055059999489.

It is an arithmetic number, because the mean of its divisors is an integer number (10055059999489).

Almost surely, 2^{20110119998977} is an apocalyptic number.

It is an amenable number.

20110119998977 is a deficient number, since it is larger than the sum of its proper divisors (1).

20110119998977 is an equidigital number, since it uses as much as digits as its factorization.

20110119998977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5143824, while the sum is 64.

The spelling of 20110119998977 in words is "twenty trillion, one hundred ten billion, one hundred nineteen million, nine hundred ninety-eight thousand, nine hundred seventy-seven".