23145233205540 has 48 divisors (see below), whose sum is σ = 64818001624320. Its totient is φ = 6170981364480.

The previous prime is 23145233205539. The next prime is 23145233205551. The reversal of 23145233205540 is 4550233254132.

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, 33430225 + ... + 34115544.

It is an arithmetic number, because the mean of its divisors is an integer number (1350375033840).

Almost surely, 2^{23145233205540} is an apocalyptic number.

23145233205540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23145233205540 is an abundant number, since it is smaller than the sum of its proper divisors (41672768418780).

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

23145233205540 is a wasteful number, since it uses less digits than its factorization.

23145233205540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67551492 (or 67551490 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 39.

Adding to 23145233205540 its reverse (4550233254132), we get a palindrome (27695466459672).

The spelling of 23145233205540 in words is "twenty-three trillion, one hundred forty-five billion, two hundred thirty-three million, two hundred five thousand, five hundred forty".