32213220023440 has 40 divisors (see below), whose sum is σ = 74988314871480. Its totient is φ = 12869360557056.

The previous prime is 32213220023429. The next prime is 32213220023443. The reversal of 32213220023440 is 4432002231223.

It can be written as a sum of positive squares in 4 ways, for example, as 2982155979664 + 29231064043776 = 1726892^2 + 5406576^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 32213220023399 and 32213220023408.

It is not an unprimeable number, because it can be changed into a prime (32213220023443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248801319 + ... + 248930758.

It is an arithmetic number, because the mean of its divisors is an integer number (1874707871787).

Almost surely, 2^{32213220023440} is an apocalyptic number.

It is an amenable number.

32213220023440 is an abundant number, since it is smaller than the sum of its proper divisors (42775094848040).

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

32213220023440 is a wasteful number, since it uses less digits than its factorization.

32213220023440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497732899 (or 497732893 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 32213220023440 its reverse (4432002231223), we get a palindrome (36645222254663).

The spelling of 32213220023440 in words is "thirty-two trillion, two hundred thirteen billion, two hundred twenty million, twenty-three thousand, four hundred forty".