21474184400466 has 48 divisors (see below), whose sum is σ = 49969303061760. Its totient is φ = 6134381436960.

The previous prime is 21474184400329. The next prime is 21474184400477. The reversal of 21474184400466 is 66400448147412.

It is a super-2 number, since 2×21474184400466² (a number of 27 digits) contains 22 as substring.

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, 4902946 + ... + 8184573.

It is an arithmetic number, because the mean of its divisors is an integer number (1041027147120).

Almost surely, 2^{21474184400466} is an apocalyptic number.

21474184400466 is an abundant number, since it is smaller than the sum of its proper divisors (28495118661294).

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

21474184400466 is a wasteful number, since it uses less digits than its factorization.

21474184400466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13093119 (or 13093112 counting only the distinct ones).

The product of its (nonzero) digits is 4128768, while the sum is 51.

The spelling of 21474184400466 in words is "twenty-one trillion, four hundred seventy-four billion, one hundred eighty-four million, four hundred thousand, four hundred sixty-six".