100538639077 has 2 divisors, whose sum is σ = 100538639078. Its totient is φ = 100538639076.

The previous prime is 100538639053. The next prime is 100538639087. The reversal of 100538639077 is 770936835001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72080973441 + 28457665636 = 268479^2 + 168694^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100538639077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100538639077.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100538639017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50269319538 + 50269319539.

It is an arithmetic number, because the mean of its divisors is an integer number (50269319539).

Almost surely, 2^100538639077 is an apocalyptic number.

It is an amenable number.

100538639077 is a deficient number, since it is larger than the sum of its proper divisors (1).

100538639077 is an equidigital number, since it uses as much as digits as its factorization.

100538639077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 952560, while the sum is 49.

The spelling of 100538639077 in words is "one hundred billion, five hundred thirty-eight million, six hundred thirty-nine thousand, seventy-seven".