21403411675 has 24 divisors (see below), whose sum is σ = 26811766080. Its totient is φ = 16947878400.

The previous prime is 21403411663. The next prime is 21403411697. The reversal of 21403411675 is 57611430412.

It is not a de Polignac number, because 21403411675 - 2²¹ = 21401314523 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21403411675.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3002115 + ... + 3009235.

It is an arithmetic number, because the mean of its divisors is an integer number (1117156920).

Almost surely, 2^21403411675 is an apocalyptic number.

21403411675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21403411675 is a deficient number, since it is larger than the sum of its proper divisors (5408354405).

21403411675 is a wasteful number, since it uses less digits than its factorization.

21403411675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8343 (or 8338 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 21403411675 in words is "twenty-one billion, four hundred three million, four hundred eleven thousand, six hundred seventy-five".