785309097523 has 4 divisors (see below), whose sum is σ = 810641649088. Its totient is φ = 759976545960.

The previous prime is 785309097509. The next prime is 785309097563. The reversal of 785309097523 is 325790903587.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 325790903587 = 2179 ⋅149513953.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-785309097523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (785309097563) 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, 12666275736 + ... + 12666275797.

It is an arithmetic number, because the mean of its divisors is an integer number (202660412272).

Almost surely, 2^785309097523 is an apocalyptic number.

785309097523 is a deficient number, since it is larger than the sum of its proper divisors (25332551565).

785309097523 is a wasteful number, since it uses less digits than its factorization.

785309097523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25332551564.

The product of its (nonzero) digits is 14288400, while the sum is 58.

The spelling of 785309097523 in words is "seven hundred eighty-five billion, three hundred nine million, ninety-seven thousand, five hundred twenty-three".