320154449683 has 4 divisors (see below), whose sum is σ = 330482012608. Its totient is φ = 309826886760.

The previous prime is 320154449597. The next prime is 320154449701. The reversal of 320154449683 is 386944451023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 386944451023 = 13 ⋅29764957771.

It is a cyclic number.

It is not a de Polignac number, because 320154449683 - 2³³ = 311564515091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320154449383) 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, 5163781416 + ... + 5163781477.

It is an arithmetic number, because the mean of its divisors is an integer number (82620503152).

Almost surely, 2^320154449683 is an apocalyptic number.

320154449683 is a deficient number, since it is larger than the sum of its proper divisors (10327562925).

320154449683 is a wasteful number, since it uses less digits than its factorization.

320154449683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10327562924.

The product of its (nonzero) digits is 2488320, while the sum is 49.

The spelling of 320154449683 in words is "three hundred twenty billion, one hundred fifty-four million, four hundred forty-nine thousand, six hundred eighty-three".