23554390117 has 4 divisors (see below), whose sum is σ = 24794094880. Its totient is φ = 22314685356.

The previous prime is 23554390073. The next prime is 23554390129. The reversal of 23554390117 is 71109345532.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-23554390117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23554390117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23554390187) 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, 619852353 + ... + 619852390.

It is an arithmetic number, because the mean of its divisors is an integer number (6198523720).

Almost surely, 2^23554390117 is an apocalyptic number.

It is an amenable number.

23554390117 is a deficient number, since it is larger than the sum of its proper divisors (1239704763).

23554390117 is a wasteful number, since it uses less digits than its factorization.

23554390117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239704762.

The product of its (nonzero) digits is 113400, while the sum is 40.

The spelling of 23554390117 in words is "twenty-three billion, five hundred fifty-four million, three hundred ninety thousand, one hundred seventeen".