20448958386 has 32 divisors (see below), whose sum is σ = 41583284928. Its totient is φ = 6702171840.

The previous prime is 20448958379. The next prime is 20448958391. The reversal of 20448958386 is 68385984402.

It is a happy 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, 1216656 + ... + 1233348.

It is an arithmetic number, because the mean of its divisors is an integer number (1299477654).

Almost surely, 2^20448958386 is an apocalyptic number.

20448958386 is an abundant number, since it is smaller than the sum of its proper divisors (21134326542).

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

20448958386 is a wasteful number, since it uses less digits than its factorization.

20448958386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20106.

The product of its (nonzero) digits is 13271040, while the sum is 57.

The spelling of 20448958386 in words is "twenty billion, four hundred forty-eight million, nine hundred fifty-eight thousand, three hundred eighty-six".