100642662077 has 2 divisors, whose sum is σ = 100642662078. Its totient is φ = 100642662076.

The previous prime is 100642662061. The next prime is 100642662143. The reversal of 100642662077 is 770266246001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84996154681 + 15646507396 = 291541^2 + 125086^2 .

It is a cyclic number.

It is not a de Polignac number, because 100642662077 - 2⁴ = 100642662061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100642602077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50321331038 + 50321331039.

It is an arithmetic number, because the mean of its divisors is an integer number (50321331039).

Almost surely, 2^100642662077 is an apocalyptic number.

It is an amenable number.

100642662077 is a deficient number, since it is larger than the sum of its proper divisors (1).

100642662077 is an equidigital number, since it uses as much as digits as its factorization.

100642662077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 41.

The spelling of 100642662077 in words is "one hundred billion, six hundred forty-two million, six hundred sixty-two thousand, seventy-seven".