320123436646403 has 16 divisors (see below), whose sum is σ = 345044612097696. Its totient is φ = 295244599691520.

The previous prime is 320123436646369. The next prime is 320123436646441. The reversal of 320123436646403 is 304646634321023.

It is a cyclic number.

It is not a de Polignac number, because 320123436646403 - 2⁶ = 320123436646339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320123436646463) 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, 833122001 + ... + 833506157.

It is an arithmetic number, because the mean of its divisors is an integer number (21565288256106).

Almost surely, 2^{320123436646403} is an apocalyptic number.

320123436646403 is a deficient number, since it is larger than the sum of its proper divisors (24921175451293).

320123436646403 is a wasteful number, since it uses less digits than its factorization.

320123436646403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439094.

The product of its (nonzero) digits is 4478976, while the sum is 47.

The spelling of 320123436646403 in words is "three hundred twenty trillion, one hundred twenty-three billion, four hundred thirty-six million, six hundred forty-six thousand, four hundred three".