21360536447107 has 24 divisors (see below), whose sum is σ = 25292476031760. Its totient is φ = 17919632068800.

The previous prime is 21360536446969. The next prime is 21360536447183. The reversal of 21360536447107 is 70174463506312.

It is a de Polignac number, because none of the positive numbers 2^k-21360536447107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21360536442107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3327432 + ... + 7334362.

It is an arithmetic number, because the mean of its divisors is an integer number (1053853167990).

Almost surely, 2^{21360536447107} is an apocalyptic number.

21360536447107 is a deficient number, since it is larger than the sum of its proper divisors (3931939584653).

21360536447107 is a wasteful number, since it uses less digits than its factorization.

21360536447107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4010355 (or 4010344 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 49.

The spelling of 21360536447107 in words is "twenty-one trillion, three hundred sixty billion, five hundred thirty-six million, four hundred forty-seven thousand, one hundred seven".