21474334677 has 8 divisors (see below), whose sum is σ = 28646174016. Its totient is φ = 14309359232.

The previous prime is 21474334579. The next prime is 21474334681. The reversal of 21474334677 is 77643347412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21474334677 - 2²⁰ = 21473286101 is a prime.

It is a super-2 number, since 2×21474334677² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21474335677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1708668 + ... + 1721189.

It is an arithmetic number, because the mean of its divisors is an integer number (3580771752).

Almost surely, 2^21474334677 is an apocalyptic number.

It is an amenable number.

21474334677 is a deficient number, since it is larger than the sum of its proper divisors (7171839339).

21474334677 is a wasteful number, since it uses less digits than its factorization.

21474334677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3431947.

The product of its digits is 2370816, while the sum is 48.

The spelling of 21474334677 in words is "twenty-one billion, four hundred seventy-four million, three hundred thirty-four thousand, six hundred seventy-seven".