102100687979 has 2 divisors, whose sum is σ = 102100687980. Its totient is φ = 102100687978.

The previous prime is 102100687963. The next prime is 102100688077. The reversal of 102100687979 is 979786001201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102100687979 - 2⁴ = 102100687963 is a prime.

It is not a weakly prime, because it can be changed into another prime (102100687919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51050343989 + 51050343990.

It is an arithmetic number, because the mean of its divisors is an integer number (51050343990).

Almost surely, 2^102100687979 is an apocalyptic number.

102100687979 is a deficient number, since it is larger than the sum of its proper divisors (1).

102100687979 is an equidigital number, since it uses as much as digits as its factorization.

102100687979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 381024, while the sum is 50.

The spelling of 102100687979 in words is "one hundred two billion, one hundred million, six hundred eighty-seven thousand, nine hundred seventy-nine".