21128925110460 has 96 divisors (see below), whose sum is σ = 59827815032832. Its totient is φ = 5571183471360.

The previous prime is 21128925110459. The next prime is 21128925110473. The reversal of 21128925110460 is 6401152982112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2675052 + ... + 7029491.

It is an arithmetic number, because the mean of its divisors is an integer number (623206406592).

Almost surely, 2^{21128925110460} is an apocalyptic number.

21128925110460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21128925110460 is an abundant number, since it is smaller than the sum of its proper divisors (38698889922372).

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

21128925110460 is a wasteful number, since it uses less digits than its factorization.

21128925110460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9704963 (or 9704961 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 42.

The spelling of 21128925110460 in words is "twenty-one trillion, one hundred twenty-eight billion, nine hundred twenty-five million, one hundred ten thousand, four hundred sixty".