40325813221 has 4 divisors (see below), whose sum is σ = 42079109472. Its totient is φ = 38572516972.

The previous prime is 40325813219. The next prime is 40325813243. The reversal of 40325813221 is 12231852304.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40325813221 - 2¹ = 40325813219 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 (40325813251) 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, 876648091 + ... + 876648136.

It is an arithmetic number, because the mean of its divisors is an integer number (10519777368).

Almost surely, 2^40325813221 is an apocalyptic number.

It is an amenable number.

40325813221 is a deficient number, since it is larger than the sum of its proper divisors (1753296251).

40325813221 is a wasteful number, since it uses less digits than its factorization.

40325813221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1753296250.

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 40325813221 in words is "forty billion, three hundred twenty-five million, eight hundred thirteen thousand, two hundred twenty-one".