7811138050 has 48 divisors (see below), whose sum is σ = 14820926400. Its totient is φ = 3062093760.

The previous prime is 7811138047. The next prime is 7811138057. The reversal of 7811138050 is 508311187.

It is a super-2 number, since 2×7811138050² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7811137997 and 7811138015.

It is not an unprimeable number, because it can be changed into a prime (7811138057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 660792 + ... + 672508.

It is an arithmetic number, because the mean of its divisors is an integer number (308769300).

Almost surely, 2^7811138050 is an apocalyptic number.

7811138050 is a deficient number, since it is larger than the sum of its proper divisors (7009788350).

7811138050 is a wasteful number, since it uses less digits than its factorization.

7811138050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11995 (or 11990 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 34.

The square root of 7811138050 is about 88380.6429598699. The cubic root of 7811138050 is about 1984.1360036799.

The spelling of 7811138050 in words is "seven billion, eight hundred eleven million, one hundred thirty-eight thousand, fifty".