23112330145520 has 80 divisors (see below), whose sum is σ = 66995741426688. Its totient is φ = 7203843160320.

The previous prime is 23112330145519. The next prime is 23112330145591. The reversal of 23112330145520 is 2554103321132.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1875994664 + ... + 1876006983.

Almost surely, 2^{23112330145520} is an apocalyptic number.

23112330145520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23112330145520 is an abundant number, since it is smaller than the sum of its proper divisors (43883411281168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23112330145520 is a wasteful number, since it uses less digits than its factorization.

23112330145520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3752001678 (or 3752001672 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 23112330145520 its reverse (2554103321132), we get a palindrome (25666433466652).

The spelling of 23112330145520 in words is "twenty-three trillion, one hundred twelve billion, three hundred thirty million, one hundred forty-five thousand, five hundred twenty".