320551839655 has 8 divisors (see below), whose sum is σ = 384785475984. Its totient is φ = 256359292800.

The previous prime is 320551839637. The next prime is 320551839667. The reversal of 320551839655 is 556938155023.

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

It is not a de Polignac number, because 320551839655 - 2²³ = 320543451047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 10255201 + ... + 10286410.

It is an arithmetic number, because the mean of its divisors is an integer number (48098184498).

Almost surely, 2^320551839655 is an apocalyptic number.

320551839655 is a deficient number, since it is larger than the sum of its proper divisors (64233636329).

320551839655 is a wasteful number, since it uses less digits than its factorization.

320551839655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20544737.

The product of its (nonzero) digits is 4860000, while the sum is 52.

The spelling of 320551839655 in words is "three hundred twenty billion, five hundred fifty-one million, eight hundred thirty-nine thousand, six hundred fifty-five".