101198774879 has 4 divisors (see below), whose sum is σ = 104463251520. Its totient is φ = 97934298240.

The previous prime is 101198774863. The next prime is 101198774899. The reversal of 101198774879 is 978477891101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 978477891101 = 6067 ⋅161278703.

It is a cyclic number.

It is not a de Polignac number, because 101198774879 - 2⁴ = 101198774863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101198774839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1632238274 + ... + 1632238335.

It is an arithmetic number, because the mean of its divisors is an integer number (26115812880).

Almost surely, 2^101198774879 is an apocalyptic number.

101198774879 is a deficient number, since it is larger than the sum of its proper divisors (3264476641).

101198774879 is an equidigital number, since it uses as much as digits as its factorization.

101198774879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3264476640.

The product of its (nonzero) digits is 7112448, while the sum is 62.

The spelling of 101198774879 in words is "one hundred one billion, one hundred ninety-eight million, seven hundred seventy-four thousand, eight hundred seventy-nine".