396178480874881 has 4 divisors (see below), whose sum is σ = 396178593849792. Its totient is φ = 396178367899972.

The previous prime is 396178480874879. The next prime is 396178480874963. The reversal of 396178480874881 is 188478084871693.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 396178480874881 - 2¹ = 396178480874879 is a prime.

It is a super-2 number, since 2×396178480874881² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 396178480874795 and 396178480874804.

It is not an unprimeable number, because it can be changed into a prime (396178480874821) 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, 51053005 + ... + 58298938.

It is an arithmetic number, because the mean of its divisors is an integer number (99044648462448).

Almost surely, 2^{396178480874881} is an apocalyptic number.

It is an amenable number.

396178480874881 is a deficient number, since it is larger than the sum of its proper divisors (112974911).

396178480874881 is a wasteful number, since it uses less digits than its factorization.

396178480874881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112974910.

The product of its (nonzero) digits is 4161798144, while the sum is 82.

The spelling of 396178480874881 in words is "three hundred ninety-six trillion, one hundred seventy-eight billion, four hundred eighty million, eight hundred seventy-four thousand, eight hundred eighty-one".