21069242404 has 24 divisors (see below), whose sum is σ = 42141677760. Its totient is φ = 9028991136.

The previous prime is 21069242399. The next prime is 21069242431. The reversal of 21069242404 is 40424296012.

It is a self number, because there is not a number n which added to its sum of digits gives 21069242404.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 562782 + ... + 599050.

It is an arithmetic number, because the mean of its divisors is an integer number (1755903240).

Almost surely, 2^21069242404 is an apocalyptic number.

It is an amenable number.

21069242404 is an abundant number, since it is smaller than the sum of its proper divisors (21072435356).

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

21069242404 is a wasteful number, since it uses less digits than its factorization.

21069242404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57027 (or 57025 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 34.

The spelling of 21069242404 in words is "twenty-one billion, sixty-nine million, two hundred forty-two thousand, four hundred four".