32640222387 has 4 divisors (see below), whose sum is σ = 43520296520. Its totient is φ = 21760148256.

The previous prime is 32640222383. The next prime is 32640222397. The reversal of 32640222387 is 78322204623.

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

It is not a de Polignac number, because 32640222387 - 2² = 32640222383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32640222383) 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, 5440037062 + ... + 5440037067.

It is an arithmetic number, because the mean of its divisors is an integer number (10880074130).

Almost surely, 2^32640222387 is an apocalyptic number.

32640222387 is a deficient number, since it is larger than the sum of its proper divisors (10880074133).

32640222387 is a wasteful number, since it uses less digits than its factorization.

32640222387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10880074132.

The product of its (nonzero) digits is 193536, while the sum is 39.

The spelling of 32640222387 in words is "thirty-two billion, six hundred forty million, two hundred twenty-two thousand, three hundred eighty-seven".