32561560400443 has 4 divisors (see below), whose sum is σ = 32626814029000. Its totient is φ = 32496306771888.

The previous prime is 32561560400389. The next prime is 32561560400449. The reversal of 32561560400443 is 34400406516523.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32561560400443 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 32561560400443.

It is not an unprimeable number, because it can be changed into a prime (32561560400449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32626813530 + ... + 32626814527.

It is an arithmetic number, because the mean of its divisors is an integer number (8156703507250).

Almost surely, 2^{32561560400443} is an apocalyptic number.

32561560400443 is a deficient number, since it is larger than the sum of its proper divisors (65253628557).

32561560400443 is an equidigital number, since it uses as much as digits as its factorization.

32561560400443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65253628556.

The product of its (nonzero) digits is 1036800, while the sum is 43.

Adding to 32561560400443 its reverse (34400406516523), we get a palindrome (66961966916966).

The spelling of 32561560400443 in words is "thirty-two trillion, five hundred sixty-one billion, five hundred sixty million, four hundred thousand, four hundred forty-three".