320487343451 has 6 divisors (see below), whose sum is σ = 352271212356. Its totient is φ = 291352130300.

The previous prime is 320487343381. The next prime is 320487343457. The reversal of 320487343451 is 154343784023.

It is not a de Polignac number, because 320487343451 - 2¹⁸ = 320487081307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320487343457) 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 5 ways as a sum of consecutive naturals, for example, 1324327745 + ... + 1324327986.

It is an arithmetic number, because the mean of its divisors is an integer number (58711868726).

Almost surely, 2^320487343451 is an apocalyptic number.

320487343451 is a deficient number, since it is larger than the sum of its proper divisors (31783868905).

320487343451 is a wasteful number, since it uses less digits than its factorization.

320487343451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2648655753 (or 2648655742 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 44.

The spelling of 320487343451 in words is "three hundred twenty billion, four hundred eighty-seven million, three hundred forty-three thousand, four hundred fifty-one".