32224431155440 has 40 divisors (see below), whose sum is σ = 74922162652368. Its totient is φ = 12889710489600.

The previous prime is 32224431155437. The next prime is 32224431155461. The reversal of 32224431155440 is 4455113442223.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-4 number, since 4×32224431155440⁴ (a number of 55 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 32224431155393 and 32224431155402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18109615 + ... + 19809265.

Almost surely, 2^{32224431155440} is an apocalyptic number.

It is an amenable number.

32224431155440 is an abundant number, since it is smaller than the sum of its proper divisors (42697731496928).

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

32224431155440 is a wasteful number, since it uses less digits than its factorization.

32224431155440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1936657 (or 1936651 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 40.

Adding to 32224431155440 its reverse (4455113442223), we get a palindrome (36679544597663).

The spelling of 32224431155440 in words is "thirty-two trillion, two hundred twenty-four billion, four hundred thirty-one million, one hundred fifty-five thousand, four hundred forty".