23220322542 has 128 divisors (see below), whose sum is σ = 55214161920. Its totient is φ = 7208248320.

The previous prime is 23220322519. The next prime is 23220322547. The reversal of 23220322542 is 24522302232.

23220322542 is a `hidden beast` number, since 232 + 203 + 225 + 4 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23220322547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 60627283 + ... + 60627665.

It is an arithmetic number, because the mean of its divisors is an integer number (431360640).

Almost surely, 2^23220322542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23220322542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27607080960).

23220322542 is an abundant number, since it is smaller than the sum of its proper divisors (31993839378).

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

23220322542 is a wasteful number, since it uses less digits than its factorization.

23220322542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935 (or 929 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

Adding to 23220322542 its reverse (24522302232), we get a palindrome (47742624774).

The spelling of 23220322542 in words is "twenty-three billion, two hundred twenty million, three hundred twenty-two thousand, five hundred forty-two".