813048090623 has 4 divisors (see below), whose sum is σ = 813153129768. Its totient is φ = 812943051480.

The previous prime is 813048090619. The next prime is 813048090683. The reversal of 813048090623 is 326090840318.

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 813048090623 - 2² = 813048090619 is a prime.

It is a super-2 number, since 2×813048090623² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813048090683) 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, 52507961 + ... + 52523442.

It is an arithmetic number, because the mean of its divisors is an integer number (203288282442).

Almost surely, 2^813048090623 is an apocalyptic number.

813048090623 is a deficient number, since it is larger than the sum of its proper divisors (105039145).

813048090623 is a wasteful number, since it uses less digits than its factorization.

813048090623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105039144.

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 813048090623 in words is "eight hundred thirteen billion, forty-eight million, ninety thousand, six hundred twenty-three".