320066621502623 has 4 divisors (see below), whose sum is σ = 321283604854608. Its totient is φ = 318849638150640.

The previous prime is 320066621502581. The next prime is 320066621502647. The reversal of 320066621502623 is 326205126660023.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 320066621502623 - 2¹² = 320066621498527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320066621502653) 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, 608491675598 + ... + 608491676123.

It is an arithmetic number, because the mean of its divisors is an integer number (80320901213652).

Almost surely, 2^{320066621502623} is an apocalyptic number.

320066621502623 is a deficient number, since it is larger than the sum of its proper divisors (1216983351985).

320066621502623 is a wasteful number, since it uses less digits than its factorization.

320066621502623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1216983351984.

The product of its (nonzero) digits is 933120, while the sum is 44.

The spelling of 320066621502623 in words is "three hundred twenty trillion, sixty-six billion, six hundred twenty-one million, five hundred two thousand, six hundred twenty-three".