21694674276 has 72 divisors (see below), whose sum is σ = 61441633344. Its totient is φ = 6396459840.

The previous prime is 21694674271. The next prime is 21694674311. The reversal of 21694674276 is 67247649612.

21694674276 is a `hidden beast` number, since 216 + 94 + 6 + 74 + 276 = 666.

It is a super-2 number, since 2×21694674276² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21694674271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 725680 + ... + 754983.

Almost surely, 2^21694674276 is an apocalyptic number.

It is an amenable number.

21694674276 is an abundant number, since it is smaller than the sum of its proper divisors (39746959068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21694674276 is a wasteful number, since it uses less digits than its factorization.

21694674276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1480721 (or 1480716 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 54.

The spelling of 21694674276 in words is "twenty-one billion, six hundred ninety-four million, six hundred seventy-four thousand, two hundred seventy-six".