23406216145 has 16 divisors (see below), whose sum is σ = 30301241040. Its totient is φ = 17254185984.

The previous prime is 23406216139. The next prime is 23406216149. The reversal of 23406216145 is 54161260432.

It can be written as a sum of positive squares in 8 ways, for example, as 2126408769 + 21279807376 = 46113^2 + 145876^2 .

It is a cyclic number.

It is not a de Polignac number, because 23406216145 - 2⁷ = 23406216017 is a prime.

It is a super-2 number, since 2×23406216145² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23406216145.

It is not an unprimeable number, because it can be changed into a prime (23406216149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 279444 + ... + 353413.

It is an arithmetic number, because the mean of its divisors is an integer number (1893827565).

Almost surely, 2^23406216145 is an apocalyptic number.

It is an amenable number.

23406216145 is a deficient number, since it is larger than the sum of its proper divisors (6895024895).

23406216145 is a wasteful number, since it uses less digits than its factorization.

23406216145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633444.

The product of its (nonzero) digits is 34560, while the sum is 34.

Adding to 23406216145 its reverse (54161260432), we get a palindrome (77567476577).

The spelling of 23406216145 in words is "twenty-three billion, four hundred six million, two hundred sixteen thousand, one hundred forty-five".