21113550640460 has 48 divisors (see below), whose sum is σ = 44523808920864. Its totient is φ = 8410175628288.

The previous prime is 21113550640409. The next prime is 21113550640577. The reversal of 21113550640460 is 6404605531112.

21113550640460 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3680042 + ... + 7467918.

It is an arithmetic number, because the mean of its divisors is an integer number (927579352518).

Almost surely, 2^{21113550640460} is an apocalyptic number.

21113550640460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21113550640460 is an abundant number, since it is smaller than the sum of its proper divisors (23410258280404).

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

21113550640460 is a wasteful number, since it uses less digits than its factorization.

21113550640460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3789050 (or 3789048 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 21113550640460 in words is "twenty-one trillion, one hundred thirteen billion, five hundred fifty million, six hundred forty thousand, four hundred sixty".