320440451451 has 8 divisors (see below), whose sum is σ = 427339252560. Its totient is φ = 213584308992.

The previous prime is 320440451411. The next prime is 320440451483. The reversal of 320440451451 is 154154044023.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 320440451451 - 2⁷ = 320440451323 is a prime.

It is a super-2 number, since 2×320440451451² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (320440451411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10647130 + ... + 10677183.

It is an arithmetic number, because the mean of its divisors is an integer number (53417406570).

Almost surely, 2^320440451451 is an apocalyptic number.

320440451451 is a deficient number, since it is larger than the sum of its proper divisors (106898801109).

320440451451 is a wasteful number, since it uses less digits than its factorization.

320440451451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21329325.

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 320440451451 its reverse (154154044023), we get a palindrome (474594495474).

The spelling of 320440451451 in words is "three hundred twenty billion, four hundred forty million, four hundred fifty-one thousand, four hundred fifty-one".