7855461623171 has 4 divisors (see below), whose sum is σ = 7858060191072. Its totient is φ = 7852863055272.

The previous prime is 7855461623143. The next prime is 7855461623179. The reversal of 7855461623171 is 1713261645587.

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 7855461623171 - 2¹⁰ = 7855461622147 is a prime.

It is a super-2 number, since 2×7855461623171² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7855461623179) 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, 1299279416 + ... + 1299285461.

It is an arithmetic number, because the mean of its divisors is an integer number (1964515047768).

Almost surely, 2^{7855461623171} is an apocalyptic number.

7855461623171 is a deficient number, since it is larger than the sum of its proper divisors (2598567901).

7855461623171 is a wasteful number, since it uses less digits than its factorization.

7855461623171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2598567900.

The product of its digits is 8467200, while the sum is 56.

The spelling of 7855461623171 in words is "seven trillion, eight hundred fifty-five billion, four hundred sixty-one million, six hundred twenty-three thousand, one hundred seventy-one".