320521082801 has 4 divisors (see below), whose sum is σ = 320524203504. Its totient is φ = 320517962100.

The previous prime is 320521082771. The next prime is 320521082951. The reversal of 320521082801 is 108280125023.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 320521082801 - 2³⁰ = 319447340977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320521088801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1400855 + ... + 1613516.

It is an arithmetic number, because the mean of its divisors is an integer number (80131050876).

Almost surely, 2^320521082801 is an apocalyptic number.

It is an amenable number.

320521082801 is a deficient number, since it is larger than the sum of its proper divisors (3120703).

320521082801 is a wasteful number, since it uses less digits than its factorization.

320521082801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3120702.

The product of its (nonzero) digits is 7680, while the sum is 32.

The spelling of 320521082801 in words is "three hundred twenty billion, five hundred twenty-one million, eighty-two thousand, eight hundred one".