102171456479 has 4 divisors (see below), whose sum is σ = 103183055160. Its totient is φ = 101159857800.

The previous prime is 102171456467. The next prime is 102171456487. The reversal of 102171456479 is 974654171201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102171456479 - 2²⁸ = 101903021023 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 (102171456419) 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, 505799189 + ... + 505799390.

It is an arithmetic number, because the mean of its divisors is an integer number (25795763790).

Almost surely, 2^102171456479 is an apocalyptic number.

102171456479 is a deficient number, since it is larger than the sum of its proper divisors (1011598681).

102171456479 is a wasteful number, since it uses less digits than its factorization.

102171456479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011598680.

The product of its (nonzero) digits is 423360, while the sum is 47.

The spelling of 102171456479 in words is "one hundred two billion, one hundred seventy-one million, four hundred fifty-six thousand, four hundred seventy-nine".