21274367476 has 12 divisors (see below), whose sum is σ = 38095960672. Its totient is φ = 10389807288.

The previous prime is 21274367467. The next prime is 21274367537. The reversal of 21274367476 is 67476347212.

It is a super-2 number, since 2×21274367476² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61843920 + ... + 61844263.

Almost surely, 2^21274367476 is an apocalyptic number.

It is an amenable number.

21274367476 is a deficient number, since it is larger than the sum of its proper divisors (16821593196).

21274367476 is a wasteful number, since it uses less digits than its factorization.

21274367476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123688230 (or 123688228 counting only the distinct ones).

The product of its digits is 2370816, while the sum is 49.

The spelling of 21274367476 in words is "twenty-one billion, two hundred seventy-four million, three hundred sixty-seven thousand, four hundred seventy-six".