101920284779 has 2 divisors, whose sum is σ = 101920284780. Its totient is φ = 101920284778.

The previous prime is 101920284731. The next prime is 101920284821. The reversal of 101920284779 is 977482029101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101920284779 - 2²⁰ = 101919236203 is a prime.

It is not a weakly prime, because it can be changed into another prime (101920284079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50960142389 + 50960142390.

It is an arithmetic number, because the mean of its divisors is an integer number (50960142390).

Almost surely, 2^101920284779 is an apocalyptic number.

101920284779 is a deficient number, since it is larger than the sum of its proper divisors (1).

101920284779 is an equidigital number, since it uses as much as digits as its factorization.

101920284779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 50.

The spelling of 101920284779 in words is "one hundred one billion, nine hundred twenty million, two hundred eighty-four thousand, seven hundred seventy-nine".