21614195281 has 16 divisors (see below), whose sum is σ = 24847196800. Its totient is φ = 18417829248.

The previous prime is 21614195279. The next prime is 21614195297. The reversal of 21614195281 is 18259141612.

It is not a de Polignac number, because 21614195281 - 2¹ = 21614195279 is a prime.

It is a super-2 number, since 2×21614195281² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21614195261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 817375 + ... + 843403.

It is an arithmetic number, because the mean of its divisors is an integer number (1552949800).

Almost surely, 2^21614195281 is an apocalyptic number.

It is an amenable number.

21614195281 is a deficient number, since it is larger than the sum of its proper divisors (3233001519).

21614195281 is a wasteful number, since it uses less digits than its factorization.

21614195281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26728.

The product of its digits is 34560, while the sum is 40.

The spelling of 21614195281 in words is "twenty-one billion, six hundred fourteen million, one hundred ninety-five thousand, two hundred eighty-one".