20440296486 has 32 divisors (see below), whose sum is σ = 45568972800. Its totient is φ = 6791518440.

The previous prime is 20440296479. The next prime is 20440296533. The reversal of 20440296486 is 68469204402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 591766 + ... + 625353.

It is an arithmetic number, because the mean of its divisors is an integer number (1424030400).

Almost surely, 2^20440296486 is an apocalyptic number.

20440296486 is an abundant number, since it is smaller than the sum of its proper divisors (25128676314).

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

20440296486 is a wasteful number, since it uses less digits than its factorization.

20440296486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217441 (or 1217435 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The spelling of 20440296486 in words is "twenty billion, four hundred forty million, two hundred ninety-six thousand, four hundred eighty-six".