21466965192 has 32 divisors (see below), whose sum is σ = 53977639680. Its totient is φ = 7114291520.

The previous prime is 21466965181. The next prime is 21466965229. The reversal of 21466965192 is 29156966412.

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, 2580984 + ... + 2589287.

It is an arithmetic number, because the mean of its divisors is an integer number (1686801240).

Almost surely, 2^21466965192 is an apocalyptic number.

It is an amenable number.

21466965192 is an abundant number, since it is smaller than the sum of its proper divisors (32510674488).

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

21466965192 is a wasteful number, since it uses less digits than its factorization.

21466965192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5170453 (or 5170449 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 51.

The spelling of 21466965192 in words is "twenty-one billion, four hundred sixty-six million, nine hundred sixty-five thousand, one hundred ninety-two".