32981779387 has 2 divisors, whose sum is σ = 32981779388. Its totient is φ = 32981779386.

The previous prime is 32981779379. The next prime is 32981779417. The reversal of 32981779387 is 78397718923.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 32981779387 - 2³ = 32981779379 is a prime.

It is not a weakly prime, because it can be changed into another prime (32981779357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16490889693 + 16490889694.

It is an arithmetic number, because the mean of its divisors is an integer number (16490889694).

Almost surely, 2^32981779387 is an apocalyptic number.

32981779387 is a deficient number, since it is larger than the sum of its proper divisors (1).

32981779387 is an equidigital number, since it uses as much as digits as its factorization.

32981779387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32006016, while the sum is 64.

The spelling of 32981779387 in words is "thirty-two billion, nine hundred eighty-one million, seven hundred seventy-nine thousand, three hundred eighty-seven".