108637647577 has 2 divisors, whose sum is σ = 108637647578. Its totient is φ = 108637647576.

The previous prime is 108637647557. The next prime is 108637647611. The reversal of 108637647577 is 775746736801.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54821071321 + 53816576256 = 234139^2 + 231984^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-108637647577 is a prime.

It is not a weakly prime, because it can be changed into another prime (108637647557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54318823788 + 54318823789.

It is an arithmetic number, because the mean of its divisors is an integer number (54318823789).

Almost surely, 2^108637647577 is an apocalyptic number.

It is an amenable number.

108637647577 is a deficient number, since it is larger than the sum of its proper divisors (1).

108637647577 is an equidigital number, since it uses as much as digits as its factorization.

108637647577 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41489280, while the sum is 61.

The spelling of 108637647577 in words is "one hundred eight billion, six hundred thirty-seven million, six hundred forty-seven thousand, five hundred seventy-seven".