23545100881 has 4 divisors (see below), whose sum is σ = 23545507252. Its totient is φ = 23544694512.

The previous prime is 23545100879. The next prime is 23545100947. The reversal of 23545100881 is 18800154532.

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

It can be written as a sum of positive squares in 2 ways, for example, as 19674270225 + 3870830656 = 140265^2 + 62216^2 .

It is a cyclic number.

It is not a de Polignac number, because 23545100881 - 2¹ = 23545100879 is a prime.

It is a super-2 number, since 2×23545100881² (a number of 22 digits) contains 22 as substring.

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 23545100881.

It is not an unprimeable number, because it can be changed into a prime (23545100681) 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, 98190 + ... + 238183.

It is an arithmetic number, because the mean of its divisors is an integer number (5886376813).

Almost surely, 2^23545100881 is an apocalyptic number.

It is an amenable number.

23545100881 is a deficient number, since it is larger than the sum of its proper divisors (406371).

23545100881 is an equidigital number, since it uses as much as digits as its factorization.

23545100881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406370.

The product of its (nonzero) digits is 38400, while the sum is 37.

The spelling of 23545100881 in words is "twenty-three billion, five hundred forty-five million, one hundred thousand, eight hundred eighty-one".