32147377221 has 24 divisors (see below), whose sum is σ = 45592097824. Its totient is φ = 20133247680.

The previous prime is 32147377217. The next prime is 32147377243. The reversal of 32147377221 is 12277374123.

It is not a de Polignac number, because 32147377221 - 2² = 32147377217 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 32147377221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32147377201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78835 + ... + 265536.

Almost surely, 2^32147377221 is an apocalyptic number.

It is an amenable number.

32147377221 is a deficient number, since it is larger than the sum of its proper divisors (13444720603).

32147377221 is a wasteful number, since it uses less digits than its factorization.

32147377221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344469 (or 344440 counting only the distinct ones).

The product of its digits is 98784, while the sum is 39.

The spelling of 32147377221 in words is "thirty-two billion, one hundred forty-seven million, three hundred seventy-seven thousand, two hundred twenty-one".