23549376381 has 16 divisors (see below), whose sum is σ = 31905023040. Its totient is φ = 15447680640.

The previous prime is 23549376379. The next prime is 23549376391. The reversal of 23549376381 is 18367394532.

It is not a de Polignac number, because 23549376381 - 2¹ = 23549376379 is a prime.

It is a super-2 number, since 2×23549376381² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23549376391) 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, 35511 + ... + 219908.

It is an arithmetic number, because the mean of its divisors is an integer number (1994063940).

Almost surely, 2^23549376381 is an apocalyptic number.

It is an amenable number.

23549376381 is a deficient number, since it is larger than the sum of its proper divisors (8355646659).

23549376381 is a wasteful number, since it uses less digits than its factorization.

23549376381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255916.

The product of its digits is 3265920, while the sum is 51.

The spelling of 23549376381 in words is "twenty-three billion, five hundred forty-nine million, three hundred seventy-six thousand, three hundred eighty-one".