21637343379059 has 2 divisors, whose sum is σ = 21637343379060. Its totient is φ = 21637343379058.

The previous prime is 21637343379023. The next prime is 21637343379083. The reversal of 21637343379059 is 95097334373612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21637343379059 - 2²⁴ = 21637326601843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21637343378992 and 21637343379010.

It is not a weakly prime, because it can be changed into another prime (21637343372059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10818671689529 + 10818671689530.

It is an arithmetic number, because the mean of its divisors is an integer number (10818671689530).

Almost surely, 2^{21637343379059} is an apocalyptic number.

21637343379059 is a deficient number, since it is larger than the sum of its proper divisors (1).

21637343379059 is an equidigital number, since it uses as much as digits as its factorization.

21637343379059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77157360, while the sum is 62.

The spelling of 21637343379059 in words is "twenty-one trillion, six hundred thirty-seven billion, three hundred forty-three million, three hundred seventy-nine thousand, fifty-nine".