32640264461 has 4 divisors (see below), whose sum is σ = 37303159392. Its totient is φ = 27977369532.

The previous prime is 32640264443. The next prime is 32640264463. The reversal of 32640264461 is 16446204623.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-32640264461 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 (32640264463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2331447455 + ... + 2331447468.

It is an arithmetic number, because the mean of its divisors is an integer number (9325789848).

Almost surely, 2^32640264461 is an apocalyptic number.

It is an amenable number.

32640264461 is a deficient number, since it is larger than the sum of its proper divisors (4662894931).

32640264461 is an equidigital number, since it uses as much as digits as its factorization.

32640264461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4662894930.

The product of its (nonzero) digits is 165888, while the sum is 38.

The spelling of 32640264461 in words is "thirty-two billion, six hundred forty million, two hundred sixty-four thousand, four hundred sixty-one".