20415089508 has 36 divisors (see below), whose sum is σ = 52359365520. Its totient is φ = 6186390320.

The previous prime is 20415089459. The next prime is 20415089509. The reversal of 20415089508 is 80598051402.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20415089508.

It is not an unprimeable number, because it can be changed into a prime (20415089509) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7028538 + ... + 7031441.

It is an arithmetic number, because the mean of its divisors is an integer number (1454426820).

Almost surely, 2^20415089508 is an apocalyptic number.

It is an amenable number.

20415089508 is an abundant number, since it is smaller than the sum of its proper divisors (31944276012).

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

20415089508 is a wasteful number, since it uses less digits than its factorization.

20415089508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14060008 (or 14059995 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 42.

The spelling of 20415089508 in words is "twenty billion, four hundred fifteen million, eighty-nine thousand, five hundred eight".