23012550465840 has 640 divisors, whose sum is σ = 88409328940800. Its totient is φ = 5462917447680.

The previous prime is 23012550465739. The next prime is 23012550465859. The reversal of 23012550465840 is 4856405521032.

23012550465840 is a `hidden beast` number, since 2 + 3 + 0 + 1 + 2 + 5 + 504 + 65 + 84 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 717399882 + ... + 717431958.

It is an arithmetic number, because the mean of its divisors is an integer number (138139576470).

Almost surely, 2^{23012550465840} is an apocalyptic number.

23012550465840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23012550465840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44204664470400).

23012550465840 is an abundant number, since it is smaller than the sum of its proper divisors (65396778474960).

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

23012550465840 is a wasteful number, since it uses less digits than its factorization.

23012550465840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33022 (or 33010 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 45.

Adding to 23012550465840 its reverse (4856405521032), we get a palindrome (27868955986872).

The spelling of 23012550465840 in words is "twenty-three trillion, twelve billion, five hundred fifty million, four hundred sixty-five thousand, eight hundred forty".