623353108831993 has 16 divisors (see below), whose sum is σ = 626269773729600. Its totient is φ = 620439941880000.

The previous prime is 623353108831991. The next prime is 623353108831997. The reversal of 623353108831993 is 399138801353326.

It is a cyclic number.

It is not a de Polignac number, because 623353108831993 - 2¹ = 623353108831991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (623353108831991) 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, 6019833583 + ... + 6019937131.

It is an arithmetic number, because the mean of its divisors is an integer number (39141860858100).

Almost surely, 2^{623353108831993} is an apocalyptic number.

It is an amenable number.

623353108831993 is a deficient number, since it is larger than the sum of its proper divisors (2916664897607).

623353108831993 is a wasteful number, since it uses less digits than its factorization.

623353108831993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120168.

The product of its (nonzero) digits is 75582720, while the sum is 64.

The spelling of 623353108831993 in words is "six hundred twenty-three trillion, three hundred fifty-three billion, one hundred eight million, eight hundred thirty-one thousand, nine hundred ninety-three".