20172827152 has 10 divisors (see below), whose sum is σ = 39084852638. Its totient is φ = 10086413568.

The previous prime is 20172827149. The next prime is 20172827219. The reversal of 20172827152 is 25172827102.

It can be written as a sum of positive squares in only one way, i.e., 18261738496 + 1911088656 = 135136^2 + 43716^2 .

It is a super-2 number, since 2×20172827152² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 630400833 + ... + 630400864.

Almost surely, 2^20172827152 is an apocalyptic number.

It is an amenable number.

20172827152 is a deficient number, since it is larger than the sum of its proper divisors (18912025486).

20172827152 is a wasteful number, since it uses less digits than its factorization.

20172827152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260801705 (or 1260801699 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 37.

The spelling of 20172827152 in words is "twenty billion, one hundred seventy-two million, eight hundred twenty-seven thousand, one hundred fifty-two".