21477314271431 has 32 divisors (see below), whose sum is σ = 22823468236800. Its totient is φ = 20178077119200.

The previous prime is 21477314271419. The next prime is 21477314271437. The reversal of 21477314271431 is 13417241377412.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21477314271431 is a prime.

It is a super-2 number, since 2×21477314271431² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21477314271437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 257532566 + ... + 257615948.

It is an arithmetic number, because the mean of its divisors is an integer number (713233382400).

Almost surely, 2^{21477314271431} is an apocalyptic number.

21477314271431 is a deficient number, since it is larger than the sum of its proper divisors (1346153965369).

21477314271431 is a wasteful number, since it uses less digits than its factorization.

21477314271431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84627.

The product of its digits is 790272, while the sum is 47.

The spelling of 21477314271431 in words is "twenty-one trillion, four hundred seventy-seven billion, three hundred fourteen million, two hundred seventy-one thousand, four hundred thirty-one".