20415040460 has 12 divisors (see below), whose sum is σ = 42871585008. Its totient is φ = 8166016176.

The previous prime is 20415040379. The next prime is 20415040489. The reversal of 20415040460 is 6404051402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510375992 + ... + 510376031.

It is an arithmetic number, because the mean of its divisors is an integer number (3572632084).

Almost surely, 2^20415040460 is an apocalyptic number.

20415040460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20415040460 is an abundant number, since it is smaller than the sum of its proper divisors (22456544548).

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

20415040460 is a wasteful number, since it uses less digits than its factorization.

20415040460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020752032 (or 1020752030 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 20415040460 its reverse (6404051402), we get a palindrome (26819091862).

The spelling of 20415040460 in words is "twenty billion, four hundred fifteen million, forty thousand, four hundred sixty".