23220500332440 has 64 divisors (see below), whose sum is σ = 69672107944800. Its totient is φ = 6191190582272.

The previous prime is 23220500332429. The next prime is 23220500332483. The reversal of 23220500332440 is 4423300502232.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 23220500332398 and 23220500332407.

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, 13940307 + ... + 15516866.

Almost surely, 2^{23220500332440} is an apocalyptic number.

23220500332440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23220500332440 is an abundant number, since it is smaller than the sum of its proper divisors (46451607612360).

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

23220500332440 is a wasteful number, since it uses less digits than its factorization.

23220500332440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29463756 (or 29463752 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 30.

Adding to 23220500332440 its reverse (4423300502232), we get a palindrome (27643800834672).

The spelling of 23220500332440 in words is "twenty-three trillion, two hundred twenty billion, five hundred million, three hundred thirty-two thousand, four hundred forty".