23545981810 has 16 divisors (see below), whose sum is σ = 45642980376. Its totient is φ = 8693900928.

The previous prime is 23545981807. The next prime is 23545981829. The reversal of 23545981810 is 1818954532.

It is a Cunningham number, because it is equal to 153447²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 17477104401 + 6068877409 = 132201^2 + 77903^2 .

It is a super-2 number, since 2×23545981810² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90561339 + ... + 90561598.

Almost surely, 2^23545981810 is an apocalyptic number.

23545981810 is a deficient number, since it is larger than the sum of its proper divisors (22096998566).

23545981810 is a wasteful number, since it uses less digits than its factorization.

23545981810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181122957.

The product of its (nonzero) digits is 345600, while the sum is 46.

The spelling of 23545981810 in words is "twenty-three billion, five hundred forty-five million, nine hundred eighty-one thousand, eight hundred ten".