21364720715035 has 16 divisors (see below), whose sum is σ = 28081823580000. Its totient is φ = 15531675260416.

The previous prime is 21364720715029. The next prime is 21364720715059. The reversal of 21364720715035 is 53051702746312.

It is a cyclic number.

It is not a de Polignac number, because 21364720715035 - 2¹⁹ = 21364720190747 is a prime.

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, 4333612285 + ... + 4333617214.

It is an arithmetic number, because the mean of its divisors is an integer number (1755113973750).

Almost surely, 2^{21364720715035} is an apocalyptic number.

21364720715035 is a deficient number, since it is larger than the sum of its proper divisors (6717102864965).

21364720715035 is a wasteful number, since it uses less digits than its factorization.

21364720715035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8667229550.

The product of its (nonzero) digits is 1058400, while the sum is 46.

The spelling of 21364720715035 in words is "twenty-one trillion, three hundred sixty-four billion, seven hundred twenty million, seven hundred fifteen thousand, thirty-five".