23423511432109 has 2 divisors, whose sum is σ = 23423511432110. Its totient is φ = 23423511432108.

The previous prime is 23423511432089. The next prime is 23423511432253. The reversal of 23423511432109 is 90123411532432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12374389175625 + 11049122256484 = 3517725^2 + 3324022^2 .

It is a cyclic number.

It is not a de Polignac number, because 23423511432109 - 2³¹ = 23421363948461 is a prime.

It is a super-2 number, since 2×23423511432109² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23423511435109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11711755716054 + 11711755716055.

It is an arithmetic number, because the mean of its divisors is an integer number (11711755716055).

Almost surely, 2^{23423511432109} is an apocalyptic number.

It is an amenable number.

23423511432109 is a deficient number, since it is larger than the sum of its proper divisors (1).

23423511432109 is an equidigital number, since it uses as much as digits as its factorization.

23423511432109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 23423511432109 in words is "twenty-three trillion, four hundred twenty-three billion, five hundred eleven million, four hundred thirty-two thousand, one hundred nine".