20447874402 has 64 divisors (see below), whose sum is σ = 41846112000. Its totient is φ = 6659884800.

The previous prime is 20447874353. The next prime is 20447874463.

20447874402 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23052403 + ... + 23053289.

It is an arithmetic number, because the mean of its divisors is an integer number (653845500).

Almost surely, 2^20447874402 is an apocalyptic number.

20447874402 is an abundant number, since it is smaller than the sum of its proper divisors (21398237598).

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

20447874402 is a wasteful number, since it uses less digits than its factorization.

20447874402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1451.

The product of its (nonzero) digits is 401408, while the sum is 42.

The spelling of 20447874402 in words is "twenty billion, four hundred forty-seven million, eight hundred seventy-four thousand, four hundred two".