23771713447 has 4 divisors (see below), whose sum is σ = 25022856280. Its totient is φ = 22520570616.

The previous prime is 23771713429. The next prime is 23771713487. The reversal of 23771713447 is 74431717732.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23771713447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23771713397 and 23771713406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23771713487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 625571388 + ... + 625571425.

It is an arithmetic number, because the mean of its divisors is an integer number (6255714070).

Almost surely, 2^23771713447 is an apocalyptic number.

23771713447 is a deficient number, since it is larger than the sum of its proper divisors (1251142833).

23771713447 is a wasteful number, since it uses less digits than its factorization.

23771713447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251142832.

The product of its digits is 691488, while the sum is 46.

The spelling of 23771713447 in words is "twenty-three billion, seven hundred seventy-one million, seven hundred thirteen thousand, four hundred forty-seven".