20317081444 has 135 divisors (see below), whose sum is σ = 42651370755. Its totient is φ = 8466757200.

The previous prime is 20317081439. The next prime is 20317081457. The reversal of 20317081444 is 44418071302.

It is a happy number.

The square root of 20317081444 is 142538.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 655389709 + ... + 655389739.

Almost surely, 2^20317081444 is an apocalyptic number.

20317081444 is the 142538-th square number.

It is an amenable number.

20317081444 is an abundant number, since it is smaller than the sum of its proper divisors (22334289311).

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

20317081444 is an equidigital number, since it uses as much as digits as its factorization.

20317081444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 63 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The spelling of 20317081444 in words is "twenty billion, three hundred seventeen million, eighty-one thousand, four hundred forty-four".