20040520000 has 70 divisors (see below), whose sum is σ = 49694075618. Its totient is φ = 8016192000.

The previous prime is 20040519979. The next prime is 20040520033. The reversal of 20040520000 is 2504002.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 15322478656 + 4718041344 = 123784^2 + 68688^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 210507 + ... + 290506.

Almost surely, 2^20040520000 is an apocalyptic number.

20040520000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20040520000 is an abundant number, since it is smaller than the sum of its proper divisors (29653555618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20040520000 is an frugal number, since it uses more digits than its factorization.

20040520000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501045 (or 501020 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 13.

The spelling of 20040520000 in words is "twenty billion, forty million, five hundred twenty thousand".