20507626996 has 24 divisors (see below), whose sum is σ = 36380715336. Its totient is φ = 10114091520.

The previous prime is 20507626967. The next prime is 20507627009. The reversal of 20507626996 is 69962670502.

It can be written as a sum of positive squares in 4 ways, for example, as 6686332900 + 13821294096 = 81770^2 + 117564^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33145 + ... + 205216.

It is an arithmetic number, because the mean of its divisors is an integer number (1515863139).

Almost surely, 2^20507626996 is an apocalyptic number.

It is an amenable number.

20507626996 is a deficient number, since it is larger than the sum of its proper divisors (15873088340).

20507626996 is a wasteful number, since it uses less digits than its factorization.

20507626996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238659 (or 238657 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 52.

The spelling of 20507626996 in words is "twenty billion, five hundred seven million, six hundred twenty-six thousand, nine hundred ninety-six".