21429175404 has 96 divisors (see below), whose sum is σ = 62383444480. Its totient is φ = 5574210048.

The previous prime is 21429175399. The next prime is 21429175423. The reversal of 21429175404 is 40457192412.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54694 + ... + 214125.

Almost surely, 2^21429175404 is an apocalyptic number.

It is an amenable number.

21429175404 is an abundant number, since it is smaller than the sum of its proper divisors (40954269076).

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

21429175404 is a wasteful number, since it uses less digits than its factorization.

21429175404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268919 (or 268917 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The spelling of 21429175404 in words is "twenty-one billion, four hundred twenty-nine million, one hundred seventy-five thousand, four hundred four".