21296275848680 has 64 divisors (see below), whose sum is σ = 56528363566080. Its totient is φ = 7066045440000.

The previous prime is 21296275848607. The next prime is 21296275848697. The reversal of 21296275848680 is 8684857269212.

It is a self number, because there is not a number n which added to its sum of digits gives 21296275848680.

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, 1226735321 + ... + 1226752680.

It is an arithmetic number, because the mean of its divisors is an integer number (883255680720).

Almost surely, 2^{21296275848680} is an apocalyptic number.

21296275848680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21296275848680 is an abundant number, since it is smaller than the sum of its proper divisors (35232087717400).

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

21296275848680 is a wasteful number, since it uses less digits than its factorization.

21296275848680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2453488050 (or 2453488046 counting only the distinct ones).

The product of its (nonzero) digits is 185794560, while the sum is 68.

The spelling of 21296275848680 in words is "twenty-one trillion, two hundred ninety-six billion, two hundred seventy-five million, eight hundred forty-eight thousand, six hundred eighty".