21300795945 has 96 divisors (see below), whose sum is σ = 44872289280. Its totient is φ = 9204410880.

The previous prime is 21300795941. The next prime is 21300795953. The reversal of 21300795945 is 54959700312.

It is a happy number.

21300795945 is a `hidden beast` number, since 21 + 30 + 0 + 7 + 9 + 594 + 5 = 666.

It is not a de Polignac number, because 21300795945 - 2² = 21300795941 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 21300795945.

It is not an unprimeable number, because it can be changed into a prime (21300795941) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 129544 + ... + 243686.

It is an arithmetic number, because the mean of its divisors is an integer number (467419680).

Almost surely, 2^21300795945 is an apocalyptic number.

It is an amenable number.

21300795945 is an abundant number, since it is smaller than the sum of its proper divisors (23571493335).

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

21300795945 is a wasteful number, since it uses less digits than its factorization.

21300795945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114207 (or 114204 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 45.

The spelling of 21300795945 in words is "twenty-one billion, three hundred million, seven hundred ninety-five thousand, nine hundred forty-five".