101023449979 has 2 divisors, whose sum is σ = 101023449980. Its totient is φ = 101023449978.

The previous prime is 101023449949. The next prime is 101023449997. The reversal of 101023449979 is 979944320101.

Together with next prime (101023449997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101023449979 - 2¹⁵ = 101023417211 is a prime.

It is not a weakly prime, because it can be changed into another prime (101023449949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50511724989 + 50511724990.

It is an arithmetic number, because the mean of its divisors is an integer number (50511724990).

Almost surely, 2^101023449979 is an apocalyptic number.

101023449979 is a deficient number, since it is larger than the sum of its proper divisors (1).

101023449979 is an equidigital number, since it uses as much as digits as its factorization.

101023449979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 49.

The spelling of 101023449979 in words is "one hundred one billion, twenty-three million, four hundred forty-nine thousand, nine hundred seventy-nine".