493017786623 has 4 divisors (see below), whose sum is σ = 493043012880. Its totient is φ = 492992560368.

The previous prime is 493017786593. The next prime is 493017786647. The reversal of 493017786623 is 326687710394.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-493017786623 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 (493017786823) 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, 12583790 + ... + 12622907.

It is an arithmetic number, because the mean of its divisors is an integer number (123260753220).

Almost surely, 2^493017786623 is an apocalyptic number.

493017786623 is a deficient number, since it is larger than the sum of its proper divisors (25226257).

493017786623 is a wasteful number, since it uses less digits than its factorization.

493017786623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25226256.

The product of its (nonzero) digits is 9144576, while the sum is 56.

The spelling of 493017786623 in words is "four hundred ninety-three billion, seventeen million, seven hundred eighty-six thousand, six hundred twenty-three".