20315250722 has 8 divisors (see below), whose sum is σ = 32816943516. Its totient is φ = 9376269552.

The previous prime is 20315250707. The next prime is 20315250751. The reversal of 20315250722 is 22705251302.

It can be written as a sum of positive squares in 2 ways, for example, as 20096181121 + 219069601 = 141761^2 + 14801^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 390677873 + ... + 390677924.

Almost surely, 2^20315250722 is an apocalyptic number.

20315250722 is a deficient number, since it is larger than the sum of its proper divisors (12501692794).

20315250722 is a wasteful number, since it uses less digits than its factorization.

20315250722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781355812.

The product of its (nonzero) digits is 8400, while the sum is 29.

The spelling of 20315250722 in words is "twenty billion, three hundred fifteen million, two hundred fifty thousand, seven hundred twenty-two".