21500167437713 has 8 divisors (see below), whose sum is σ = 21507365617920. Its totient is φ = 21492970229200.

The previous prime is 21500167437691. The next prime is 21500167437719. The reversal of 21500167437713 is 31773476100512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21500167437713 - 2¹⁴ = 21500167421329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21500167437719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45446438 + ... + 45917088.

It is an arithmetic number, because the mean of its divisors is an integer number (2688420702240).

Almost surely, 2^{21500167437713} is an apocalyptic number.

It is an amenable number.

21500167437713 is a deficient number, since it is larger than the sum of its proper divisors (7198180207).

21500167437713 is a wasteful number, since it uses less digits than its factorization.

21500167437713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485847.

The product of its (nonzero) digits is 740880, while the sum is 47.

The spelling of 21500167437713 in words is "twenty-one trillion, five hundred billion, one hundred sixty-seven million, four hundred thirty-seven thousand, seven hundred thirteen".