32378404693 has 2 divisors, whose sum is σ = 32378404694. Its totient is φ = 32378404692.

The previous prime is 32378404687. The next prime is 32378404711. The reversal of 32378404693 is 39640487323.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23243441764 + 9134962929 = 152458^2 + 95577^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32378404693 is a prime.

It is a super-2 number, since 2×32378404693² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32378404603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16189202346 + 16189202347.

It is an arithmetic number, because the mean of its divisors is an integer number (16189202347).

Almost surely, 2^32378404693 is an apocalyptic number.

It is an amenable number.

32378404693 is a deficient number, since it is larger than the sum of its proper divisors (1).

32378404693 is an equidigital number, since it uses as much as digits as its factorization.

32378404693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 49.

The spelling of 32378404693 in words is "thirty-two billion, three hundred seventy-eight million, four hundred four thousand, six hundred ninety-three".