21214580054659 has 4 divisors (see below), whose sum is σ = 21217964106240. Its totient is φ = 21211196003080.

The previous prime is 21214580054621. The next prime is 21214580054779. The reversal of 21214580054659 is 95645008541212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21214580054659 - 2⁷ = 21214580054531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21214580054609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1692016387 + ... + 1692028924.

It is an arithmetic number, because the mean of its divisors is an integer number (5304491026560).

Almost surely, 2^{21214580054659} is an apocalyptic number.

21214580054659 is a deficient number, since it is larger than the sum of its proper divisors (3384051581).

21214580054659 is an equidigital number, since it uses as much as digits as its factorization.

21214580054659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3384051580.

The product of its (nonzero) digits is 3456000, while the sum is 52.

The spelling of 21214580054659 in words is "twenty-one trillion, two hundred fourteen billion, five hundred eighty million, fifty-four thousand, six hundred fifty-nine".