32306521421 has 4 divisors (see below), whose sum is σ = 34206905052. Its totient is φ = 30406137792.

The previous prime is 32306521397. The next prime is 32306521433. The reversal of 32306521421 is 12412560323.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12412560323 = 5569 ⋅2228867.

It can be written as a sum of positive squares in 2 ways, for example, as 15728671396 + 16577850025 = 125414^2 + 128755^2 .

It is a cyclic number.

It is not a de Polignac number, because 32306521421 - 2¹⁰ = 32306520397 is a prime.

It is a super-2 number, since 2×32306521421² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32306421421) 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, 950191790 + ... + 950191823.

It is an arithmetic number, because the mean of its divisors is an integer number (8551726263).

Almost surely, 2^32306521421 is an apocalyptic number.

It is an amenable number.

32306521421 is a deficient number, since it is larger than the sum of its proper divisors (1900383631).

32306521421 is a wasteful number, since it uses less digits than its factorization.

32306521421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1900383630.

The product of its (nonzero) digits is 8640, while the sum is 29.

The spelling of 32306521421 in words is "thirty-two billion, three hundred six million, five hundred twenty-one thousand, four hundred twenty-one".