100649888077 has 2 divisors, whose sum is σ = 100649888078. Its totient is φ = 100649888076.

The previous prime is 100649888063. The next prime is 100649888081. The reversal of 100649888077 is 770888946001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83758726921 + 16891161156 = 289411^2 + 129966^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100649888077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100649888477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50324944038 + 50324944039.

It is an arithmetic number, because the mean of its divisors is an integer number (50324944039).

Almost surely, 2^100649888077 is an apocalyptic number.

It is an amenable number.

100649888077 is a deficient number, since it is larger than the sum of its proper divisors (1).

100649888077 is an equidigital number, since it uses as much as digits as its factorization.

100649888077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5419008, while the sum is 58.

The spelling of 100649888077 in words is "one hundred billion, six hundred forty-nine million, eight hundred eighty-eight thousand, seventy-seven".