32690781901 has 4 divisors (see below), whose sum is σ = 32691617500. Its totient is φ = 32689946304.

The previous prime is 32690781887. The next prime is 32690781997. The reversal of 32690781901 is 10918709623.

It is a happy number.

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 7331811876 + 25358970025 = 85626^2 + 159245^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32690781901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32690788901) 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, 356076 + ... + 438373.

It is an arithmetic number, because the mean of its divisors is an integer number (8172904375).

Almost surely, 2^32690781901 is an apocalyptic number.

It is an amenable number.

32690781901 is a deficient number, since it is larger than the sum of its proper divisors (835599).

32690781901 is an equidigital number, since it uses as much as digits as its factorization.

32690781901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835598.

The product of its (nonzero) digits is 163296, while the sum is 46.

The spelling of 32690781901 in words is "thirty-two billion, six hundred ninety million, seven hundred eighty-one thousand, nine hundred one".