20152772488 has 16 divisors (see below), whose sum is σ = 37794694860. Its totient is φ = 10074187200.

The previous prime is 20152772441. The next prime is 20152772527. The reversal of 20152772488 is 88427725102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20038667364 + 114105124 = 141558^2 + 10682^2 .

It is a super-2 number, since 2×20152772488² (a number of 21 digits) contains 22 as substring.

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, 235603 + ... + 309538.

Almost surely, 2^20152772488 is an apocalyptic number.

It is an amenable number.

20152772488 is a deficient number, since it is larger than the sum of its proper divisors (17641922372).

20152772488 is a wasteful number, since it uses less digits than its factorization.

20152772488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549768 (or 549764 counting only the distinct ones).

The product of its (nonzero) digits is 501760, while the sum is 46.

The spelling of 20152772488 in words is "twenty billion, one hundred fifty-two million, seven hundred seventy-two thousand, four hundred eighty-eight".