20313509152 has 24 divisors (see below), whose sum is σ = 40017177900. Its totient is φ = 10150416384.

The previous prime is 20313509149. The next prime is 20313509179. The reversal of 20313509152 is 25190531302.

It can be written as a sum of positive squares in 2 ways, for example, as 14160048016 + 6153461136 = 118996^2 + 78444^2 .

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, 145777 + ... + 248752.

Almost surely, 2^20313509152 is an apocalyptic number.

It is an amenable number.

20313509152 is a deficient number, since it is larger than the sum of its proper divisors (19703668748).

20313509152 is a wasteful number, since it uses less digits than its factorization.

20313509152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396148 (or 396140 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 31.

The spelling of 20313509152 in words is "twenty billion, three hundred thirteen million, five hundred nine thousand, one hundred fifty-two".