102400923871 has 4 divisors (see below), whose sum is σ = 107790446200. Its totient is φ = 97011401544.

The previous prime is 102400923851. The next prime is 102400923887. The reversal of 102400923871 is 178329004201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 178329004201 = 1709 ⋅104346989.

It is a cyclic number.

It is not a de Polignac number, because 102400923871 - 2²³ = 102392535263 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102400923871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102400923851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2694761136 + ... + 2694761173.

It is an arithmetic number, because the mean of its divisors is an integer number (26947611550).

Almost surely, 2^102400923871 is an apocalyptic number.

102400923871 is a deficient number, since it is larger than the sum of its proper divisors (5389522329).

102400923871 is an equidigital number, since it uses as much as digits as its factorization.

102400923871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5389522328.

The product of its (nonzero) digits is 24192, while the sum is 37.

The spelling of 102400923871 in words is "one hundred two billion, four hundred million, nine hundred twenty-three thousand, eight hundred seventy-one".