32490536591 has 4 divisors (see below), whose sum is σ = 32491426032. Its totient is φ = 32489647152.

The previous prime is 32490536531. The next prime is 32490536627. The reversal of 32490536591 is 19563509423.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19563509423 = 613 ⋅31914371.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32490536591 is a prime.

It is a super-2 number, since 2×32490536591² (a number of 22 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 (32490536531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387470 + ... + 463803.

It is an arithmetic number, because the mean of its divisors is an integer number (8122856508).

Almost surely, 2^32490536591 is an apocalyptic number.

32490536591 is a deficient number, since it is larger than the sum of its proper divisors (889441).

32490536591 is an equidigital number, since it uses as much as digits as its factorization.

32490536591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889440.

The product of its (nonzero) digits is 874800, while the sum is 47.

The spelling of 32490536591 in words is "thirty-two billion, four hundred ninety million, five hundred thirty-six thousand, five hundred ninety-one".