32641630436621 has 4 divisors (see below), whose sum is σ = 32649094797372. Its totient is φ = 32634166075872.

The previous prime is 32641630436617. The next prime is 32641630436743. The reversal of 32641630436621 is 12663403614623.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11366243560996 + 21275386875625 = 3371386^2 + 4612525^2 .

It is a cyclic number.

It is not a de Polignac number, because 32641630436621 - 2² = 32641630436617 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32661630436621) 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, 3732173816 + ... + 3732182561.

It is an arithmetic number, because the mean of its divisors is an integer number (8162273699343).

Almost surely, 2^{32641630436621} is an apocalyptic number.

It is an amenable number.

32641630436621 is a deficient number, since it is larger than the sum of its proper divisors (7464360751).

32641630436621 is an equidigital number, since it uses as much as digits as its factorization.

32641630436621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7464360750.

The product of its (nonzero) digits is 2239488, while the sum is 47.

The spelling of 32641630436621 in words is "thirty-two trillion, six hundred forty-one billion, six hundred thirty million, four hundred thirty-six thousand, six hundred twenty-one".