20407449932 has 12 divisors (see below), whose sum is σ = 35802997440. Its totient is φ = 10178022096.

The previous prime is 20407449911. The next prime is 20407449943. The reversal of 20407449932 is 23994470402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6423932 + ... + 6427107.

It is an arithmetic number, because the mean of its divisors is an integer number (2983583120).

Almost surely, 2^20407449932 is an apocalyptic number.

It is an amenable number.

20407449932 is a deficient number, since it is larger than the sum of its proper divisors (15395547508).

20407449932 is a wasteful number, since it uses less digits than its factorization.

20407449932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12851440 (or 12851438 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 44.

The spelling of 20407449932 in words is "twenty billion, four hundred seven million, four hundred forty-nine thousand, nine hundred thirty-two".