23555449769 has 4 divisors (see below), whose sum is σ = 23566262160. Its totient is φ = 23544637380.

The previous prime is 23555449763. The next prime is 23555449777. The reversal of 23555449769 is 96794455532.

It is a happy number.

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 23555449769 - 2³² = 19260482473 is a prime.

It is a super-2 number, since 2×23555449769² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23555449763) 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, 5402927 + ... + 5407284.

It is an arithmetic number, because the mean of its divisors is an integer number (5891565540).

Almost surely, 2^23555449769 is an apocalyptic number.

It is an amenable number.

23555449769 is a deficient number, since it is larger than the sum of its proper divisors (10812391).

23555449769 is a wasteful number, since it uses less digits than its factorization.

23555449769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10812390.

The product of its digits is 40824000, while the sum is 59.

The spelling of 23555449769 in words is "twenty-three billion, five hundred fifty-five million, four hundred forty-nine thousand, seven hundred sixty-nine".