476891981161 has 4 divisors (see below), whose sum is σ = 477281918592. Its totient is φ = 476502043732.

The previous prime is 476891981101. The next prime is 476891981171. The reversal of 476891981161 is 161189198674.

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 476891981161 - 2¹⁷ = 476891850089 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 476891981161.

It is not an unprimeable number, because it can be changed into a prime (476891981101) 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, 194966881 + ... + 194969326.

It is an arithmetic number, because the mean of its divisors is an integer number (119320479648).

Almost surely, 2^476891981161 is an apocalyptic number.

It is an amenable number.

476891981161 is a deficient number, since it is larger than the sum of its proper divisors (389937431).

476891981161 is a wasteful number, since it uses less digits than its factorization.

476891981161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389937430.

The product of its digits is 5225472, while the sum is 61.

The spelling of 476891981161 in words is "four hundred seventy-six billion, eight hundred ninety-one million, nine hundred eighty-one thousand, one hundred sixty-one".