32690781887 has 2 divisors, whose sum is σ = 32690781888. Its totient is φ = 32690781886.

The previous prime is 32690781883. The next prime is 32690781997. The reversal of 32690781887 is 78818709623.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 32690781887 - 2² = 32690781883 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32690781883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16345390943 + 16345390944.

It is an arithmetic number, because the mean of its divisors is an integer number (16345390944).

Almost surely, 2^32690781887 is an apocalyptic number.

32690781887 is a deficient number, since it is larger than the sum of its proper divisors (1).

32690781887 is an equidigital number, since it uses as much as digits as its factorization.

32690781887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8128512, while the sum is 59.

The spelling of 32690781887 in words is "thirty-two billion, six hundred ninety million, seven hundred eighty-one thousand, eight hundred eighty-seven".