21630455413140 has 192 divisors, whose sum is σ = 72644414201856. Its totient is φ = 4701806596608.

The previous prime is 21630455413129. The next prime is 21630455413249. The reversal of 21630455413140 is 4131455403612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4800432 + ... + 8142791.

It is an arithmetic number, because the mean of its divisors is an integer number (378356323968).

Almost surely, 2^{21630455413140} is an apocalyptic number.

21630455413140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21630455413140 is an abundant number, since it is smaller than the sum of its proper divisors (51013958788716).

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

21630455413140 is a wasteful number, since it uses less digits than its factorization.

21630455413140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12943438 (or 12943436 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 21630455413140 in words is "twenty-one trillion, six hundred thirty billion, four hundred fifty-five million, four hundred thirteen thousand, one hundred forty".