20652646522 has 8 divisors (see below), whose sum is σ = 30990797172. Its totient is φ = 10322380800.

The previous prime is 20652646513. The next prime is 20652646523. The reversal of 20652646522 is 22564625602.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17979859921 + 2672786601 = 134089^2 + 51699^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20652646523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1964679 + ... + 1975162.

Almost surely, 2^20652646522 is an apocalyptic number.

20652646522 is a deficient number, since it is larger than the sum of its proper divisors (10338150650).

20652646522 is a wasteful number, since it uses less digits than its factorization.

20652646522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3942464.

The product of its (nonzero) digits is 345600, while the sum is 40.

The spelling of 20652646522 in words is "twenty billion, six hundred fifty-two million, six hundred forty-six thousand, five hundred twenty-two".