320061553033555 has 8 divisors (see below), whose sum is σ = 384074461353744. Its totient is φ = 256048843951200.

The previous prime is 320061553033529. The next prime is 320061553033589. The reversal of 320061553033555 is 555330355160023.

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

It is not a de Polignac number, because 320061553033555 - 2⁴³ = 311265460011347 is a prime.

It is a super-2 number, since 2×320061553033555² (a number of 30 digits) contains 22 as substring.

It is a Duffinian 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, 46252216 + ... + 52719925.

It is an arithmetic number, because the mean of its divisors is an integer number (48009307669218).

Almost surely, 2^{320061553033555} is an apocalyptic number.

320061553033555 is a deficient number, since it is larger than the sum of its proper divisors (64012908320189).

320061553033555 is an equidigital number, since it uses as much as digits as its factorization.

320061553033555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99618917.

The product of its (nonzero) digits is 3037500, while the sum is 46.

The spelling of 320061553033555 in words is "three hundred twenty trillion, sixty-one billion, five hundred fifty-three million, thirty-three thousand, five hundred fifty-five".