32257042721 has 8 divisors (see below), whose sum is σ = 32385225600. Its totient is φ = 32129092720.

The previous prime is 32257042711. The next prime is 32257042757. The reversal of 32257042721 is 12724075223.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32257042721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32257042711) 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, 222026 + ... + 337356.

It is an arithmetic number, because the mean of its divisors is an integer number (4048153200).

Almost surely, 2^32257042721 is an apocalyptic number.

It is an amenable number.

32257042721 is a deficient number, since it is larger than the sum of its proper divisors (128182879).

32257042721 is a wasteful number, since it uses less digits than its factorization.

32257042721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116439.

The product of its (nonzero) digits is 47040, while the sum is 35.

The spelling of 32257042721 in words is "thirty-two billion, two hundred fifty-seven million, forty-two thousand, seven hundred twenty-one".