320322440410551 has 24 divisors (see below), whose sum is σ = 465577437152256. Its totient is φ = 212214979587600.

The previous prime is 320322440410547. The next prime is 320322440410751. The reversal of 320322440410551 is 155014044223023.

It is a happy number.

320322440410551 is a `hidden beast` number, since 3 + 2 + 0 + 3 + 2 + 24 + 40 + 41 + 0 + 551 = 666.

It is not a de Polignac number, because 320322440410551 - 2² = 320322440410547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320322440410151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1494016 + ... + 25355018.

It is an arithmetic number, because the mean of its divisors is an integer number (19399059881344).

Almost surely, 2^{320322440410551} is an apocalyptic number.

320322440410551 is a deficient number, since it is larger than the sum of its proper divisors (145254996741705).

320322440410551 is a wasteful number, since it uses less digits than its factorization.

320322440410551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23870323 (or 23870320 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 320322440410551 its reverse (155014044223023), we get a palindrome (475336484633574).

The spelling of 320322440410551 in words is "three hundred twenty trillion, three hundred twenty-two billion, four hundred forty million, four hundred ten thousand, five hundred fifty-one".