21860914065331 has 32 divisors (see below), whose sum is σ = 25094574489600. Its totient is φ = 18861371364000.

The previous prime is 21860914065293. The next prime is 21860914065349. The reversal of 21860914065331 is 13356041906812.

It is not a de Polignac number, because 21860914065331 - 2¹⁷ = 21860913934259 is a prime.

It is a super-2 number, since 2×21860914065331² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21860914066331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7133226 + ... + 9726496.

It is an arithmetic number, because the mean of its divisors is an integer number (784205452800).

Almost surely, 2^{21860914065331} is an apocalyptic number.

21860914065331 is a deficient number, since it is larger than the sum of its proper divisors (3233660424269).

21860914065331 is a wasteful number, since it uses less digits than its factorization.

21860914065331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2593791.

The product of its (nonzero) digits is 933120, while the sum is 49.

The spelling of 21860914065331 in words is "twenty-one trillion, eight hundred sixty billion, nine hundred fourteen million, sixty-five thousand, three hundred thirty-one".