813124487955 has 32 divisors (see below), whose sum is σ = 1401144252480. Its totient is φ = 400287951360.

The previous prime is 813124487951. The next prime is 813124487969. The reversal of 813124487955 is 559784421318.

It is not a de Polignac number, because 813124487955 - 2² = 813124487951 is a prime.

It is a super-2 number, since 2×813124487955² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 813124487895 and 813124487904.

It is not an unprimeable number, because it can be changed into a prime (813124487951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4431945 + ... + 4611765.

It is an arithmetic number, because the mean of its divisors is an integer number (43785757890).

Almost surely, 2^813124487955 is an apocalyptic number.

813124487955 is a deficient number, since it is larger than the sum of its proper divisors (588019764525).

813124487955 is a wasteful number, since it uses less digits than its factorization.

813124487955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203031.

The product of its digits is 9676800, while the sum is 57.

The spelling of 813124487955 in words is "eight hundred thirteen billion, one hundred twenty-four million, four hundred eighty-seven thousand, nine hundred fifty-five".