32691988640869 has 4 divisors (see below), whose sum is σ = 32692021214796. Its totient is φ = 32691956066944.

The previous prime is 32691988640821. The next prime is 32691988640873. The reversal of 32691988640869 is 96804688919623.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21101620322500 + 11590368318369 = 4593650^2 + 3404463^2 .

It is a cyclic number.

It is not a de Polignac number, because 32691988640869 - 2⁹ = 32691988640357 is a prime.

It is a super-2 number, since 2×32691988640869² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32691988640369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14732044 + ... + 16805269.

It is an arithmetic number, because the mean of its divisors is an integer number (8173005303699).

Almost surely, 2^{32691988640869} is an apocalyptic number.

It is an amenable number.

32691988640869 is a deficient number, since it is larger than the sum of its proper divisors (32573927).

32691988640869 is a wasteful number, since it uses less digits than its factorization.

32691988640869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32573926.

The product of its (nonzero) digits is 1934917632, while the sum is 79.

The spelling of 32691988640869 in words is "thirty-two trillion, six hundred ninety-one billion, nine hundred eighty-eight million, six hundred forty thousand, eight hundred sixty-nine".