20667150752 has 12 divisors (see below), whose sum is σ = 40688453106. Its totient is φ = 10333575360.

The previous prime is 20667150719. The next prime is 20667150781. The reversal of 20667150752 is 25705176602.

It can be written as a sum of positive squares in only one way, i.e., 15041550736 + 5625600016 = 122644^2 + 75004^2 .

It is a super-2 number, since 2×20667150752² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 322924199 + ... + 322924262.

Almost surely, 2^20667150752 is an apocalyptic number.

It is an amenable number.

20667150752 is a deficient number, since it is larger than the sum of its proper divisors (20021302354).

20667150752 is an equidigital number, since it uses as much as digits as its factorization.

20667150752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645848471 (or 645848463 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 41.

The spelling of 20667150752 in words is "twenty billion, six hundred sixty-seven million, one hundred fifty thousand, seven hundred fifty-two".