820593743123 has 8 divisors (see below), whose sum is σ = 1023077913600. Its totient is φ = 639423695880.

The previous prime is 820593743119. The next prime is 820593743143. The reversal of 820593743123 is 321347395028.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 820593743123 - 2² = 820593743119 is a prime.

It is a super-2 number, since 2×820593743123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (820593743143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5328530723 + ... + 5328530876.

It is an arithmetic number, because the mean of its divisors is an integer number (127884739200).

Almost surely, 2^820593743123 is an apocalyptic number.

820593743123 is a deficient number, since it is larger than the sum of its proper divisors (202484170477).

820593743123 is a wasteful number, since it uses less digits than its factorization.

820593743123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10657061617.

The product of its (nonzero) digits is 1088640, while the sum is 47.

The spelling of 820593743123 in words is "eight hundred twenty billion, five hundred ninety-three million, seven hundred forty-three thousand, one hundred twenty-three".