32387194681 has 2 divisors, whose sum is σ = 32387194682. Its totient is φ = 32387194680.

The previous prime is 32387194669. The next prime is 32387194699. The reversal of 32387194681 is 18649178323.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32268733225 + 118461456 = 179635^2 + 10884^2 .

It is a cyclic number.

It is not a de Polignac number, because 32387194681 - 2¹¹ = 32387192633 is a prime.

It is a super-2 number, since 2×32387194681² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (32387194661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16193597340 + 16193597341.

It is an arithmetic number, because the mean of its divisors is an integer number (16193597341).

Almost surely, 2^32387194681 is an apocalyptic number.

It is an amenable number.

32387194681 is a deficient number, since it is larger than the sum of its proper divisors (1).

32387194681 is an equidigital number, since it uses as much as digits as its factorization.

32387194681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1741824, while the sum is 52.

The spelling of 32387194681 in words is "thirty-two billion, three hundred eighty-seven million, one hundred ninety-four thousand, six hundred eighty-one".