21474167277 has 16 divisors (see below), whose sum is σ = 29304095040. Its totient is φ = 13980312192.

The previous prime is 21474167261. The next prime is 21474167279. The reversal of 21474167277 is 77276147412.

It is not a de Polignac number, because 21474167277 - 2⁴ = 21474167261 is a prime.

It is a super-2 number, since 2×21474167277² (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 (21474167279) 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, 746599 + ... + 774827.

It is an arithmetic number, because the mean of its divisors is an integer number (1831505940).

Almost surely, 2^21474167277 is an apocalyptic number.

It is an amenable number.

21474167277 is a deficient number, since it is larger than the sum of its proper divisors (7829927763).

21474167277 is a wasteful number, since it uses less digits than its factorization.

21474167277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34172.

The product of its digits is 921984, while the sum is 48.

The spelling of 21474167277 in words is "twenty-one billion, four hundred seventy-four million, one hundred sixty-seven thousand, two hundred seventy-seven".