20467218402 has 16 divisors (see below), whose sum is σ = 45482707680. Its totient is φ = 6822406116.

The previous prime is 20467218367. The next prime is 20467218509. The reversal of 20467218402 is 20481276402.

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, 189511228 + ... + 189511335.

It is an arithmetic number, because the mean of its divisors is an integer number (2842669230).

Almost surely, 2^20467218402 is an apocalyptic number.

20467218402 is an abundant number, since it is smaller than the sum of its proper divisors (25015489278).

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

20467218402 is a wasteful number, since it uses less digits than its factorization.

20467218402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379022574 (or 379022568 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The spelling of 20467218402 in words is "twenty billion, four hundred sixty-seven million, two hundred eighteen thousand, four hundred two".