102020705455775 has 12 divisors (see below), whose sum is σ = 126571804293792. Its totient is φ = 81573900152640.

The previous prime is 102020705455751. The next prime is 102020705455817. The reversal of 102020705455775 is 577554507020201.

It is not a de Polignac number, because 102020705455775 - 2¹⁰ = 102020705454751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1066556519 + ... + 1066652168.

It is an arithmetic number, because the mean of its divisors is an integer number (10547650357816).

Almost surely, 2^{102020705455775} is an apocalyptic number.

102020705455775 is a deficient number, since it is larger than the sum of its proper divisors (24551098838017).

102020705455775 is a wasteful number, since it uses less digits than its factorization.

102020705455775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2133210610 (or 2133210605 counting only the distinct ones).

The product of its (nonzero) digits is 3430000, while the sum is 50.

The spelling of 102020705455775 in words is "one hundred two trillion, twenty billion, seven hundred five million, four hundred fifty-five thousand, seven hundred seventy-five".