21140674124817 has 64 divisors (see below), whose sum is σ = 31391914770944. Its totient is φ = 12570671646720.

The previous prime is 21140674124813. The next prime is 21140674124833. The reversal of 21140674124817 is 71842147604112.

It is not a de Polignac number, because 21140674124817 - 2² = 21140674124813 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21140674124813) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 189824373 + ... + 189935709.

It is an arithmetic number, because the mean of its divisors is an integer number (490498668296).

Almost surely, 2^{21140674124817} is an apocalyptic number.

It is an amenable number.

21140674124817 is a deficient number, since it is larger than the sum of its proper divisors (10251240646127).

21140674124817 is a wasteful number, since it uses less digits than its factorization.

21140674124817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112298.

The product of its (nonzero) digits is 602112, while the sum is 48.

The spelling of 21140674124817 in words is "twenty-one trillion, one hundred forty billion, six hundred seventy-four million, one hundred twenty-four thousand, eight hundred seventeen".