102375578861 has 4 divisors (see below), whose sum is σ = 102428542812. Its totient is φ = 102322614912.

The previous prime is 102375578839. The next prime is 102375578881. The reversal of 102375578861 is 168875573201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 168875573201 = 199621 ⋅845981.

It can be written as a sum of positive squares in 2 ways, for example, as 88497325225 + 13878253636 = 297485^2 + 117806^2 .

It is a cyclic number.

It is not a de Polignac number, because 102375578861 - 2³⁰ = 101301837037 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 (102375578801) 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, 26479076 + ... + 26482941.

It is an arithmetic number, because the mean of its divisors is an integer number (25607135703).

Almost surely, 2^102375578861 is an apocalyptic number.

It is an amenable number.

102375578861 is a deficient number, since it is larger than the sum of its proper divisors (52963951).

102375578861 is an equidigital number, since it uses as much as digits as its factorization.

102375578861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52963950.

The product of its (nonzero) digits is 2822400, while the sum is 53.

The spelling of 102375578861 in words is "one hundred two billion, three hundred seventy-five million, five hundred seventy-eight thousand, eight hundred sixty-one".