21744632112477 has 8 divisors (see below), whose sum is σ = 30253401200064. Its totient is φ = 13866142216608.

The previous prime is 21744632112419. The next prime is 21744632112479. The reversal of 21744632112477 is 77421123644712.

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

It is not a de Polignac number, because 21744632112477 - 2⁸ = 21744632112221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21744632112479) 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, 157569797848 + ... + 157569797985.

It is an arithmetic number, because the mean of its divisors is an integer number (3781675150008).

Almost surely, 2^{21744632112477} is an apocalyptic number.

It is an amenable number.

21744632112477 is a deficient number, since it is larger than the sum of its proper divisors (8508769087587).

21744632112477 is a wasteful number, since it uses less digits than its factorization.

21744632112477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315139595859.

The product of its digits is 3161088, while the sum is 51.

The spelling of 21744632112477 in words is "twenty-one trillion, seven hundred forty-four billion, six hundred thirty-two million, one hundred twelve thousand, four hundred seventy-seven".