320231166256533 has 16 divisors (see below), whose sum is σ = 488049740528256. Its totient is φ = 182959823023680.

The previous prime is 320231166256439. The next prime is 320231166256559. The reversal of 320231166256533 is 335652661132023.

It is a happy number.

It is not a de Polignac number, because 320231166256533 - 2⁸ = 320231166256277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320231166256333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1225484466 + ... + 1225745747.

It is an arithmetic number, because the mean of its divisors is an integer number (30503108783016).

Almost surely, 2^{320231166256533} is an apocalyptic number.

It is an amenable number.

320231166256533 is a deficient number, since it is larger than the sum of its proper divisors (167818574271723).

320231166256533 is a wasteful number, since it uses less digits than its factorization.

320231166256533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2451236444.

The product of its (nonzero) digits is 3499200, while the sum is 48.

The spelling of 320231166256533 in words is "three hundred twenty trillion, two hundred thirty-one billion, one hundred sixty-six million, two hundred fifty-six thousand, five hundred thirty-three".