2666431423476 has 72 divisors (see below), whose sum is σ = 7104857437440. Its totient is φ = 864788521824.

The previous prime is 2666431423433. The next prime is 2666431423477. The reversal of 2666431423476 is 6743241346662.

It is a super-2 number, since 2×2666431423476² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666431423477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8869380 + ... + 9165083.

It is an arithmetic number, because the mean of its divisors is an integer number (98678575520).

Almost surely, 2^{2666431423476} is an apocalyptic number.

It is an amenable number.

2666431423476 is an abundant number, since it is smaller than the sum of its proper divisors (4438426013964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2666431423476 is a wasteful number, since it uses less digits than its factorization.

2666431423476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18034550 (or 18034505 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 54.

The spelling of 2666431423476 in words is "two trillion, six hundred sixty-six billion, four hundred thirty-one million, four hundred twenty-three thousand, four hundred seventy-six".