23553939457 has 4 divisors (see below), whose sum is σ = 23559972016. Its totient is φ = 23547906900.

The previous prime is 23553939377. The next prime is 23553939463. The reversal of 23553939457 is 75493935532.

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 cyclic number.

It is not a de Polignac number, because 23553939457 - 2²⁷ = 23419721729 is a prime.

It is a super-3 number, since 3×23553939457³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23553939398 and 23553939407.

It is not an unprimeable number, because it can be changed into a prime (23553934457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3010419 + ... + 3018232.

It is an arithmetic number, because the mean of its divisors is an integer number (5889993004).

Almost surely, 2^23553939457 is an apocalyptic number.

It is an amenable number.

23553939457 is a deficient number, since it is larger than the sum of its proper divisors (6032559).

23553939457 is an equidigital number, since it uses as much as digits as its factorization.

23553939457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6032558.

The product of its digits is 15309000, while the sum is 55.

The spelling of 23553939457 in words is "twenty-three billion, five hundred fifty-three million, nine hundred thirty-nine thousand, four hundred fifty-seven".