7791324133 has 4 divisors (see below), whose sum is σ = 7797332620. Its totient is φ = 7785315648.

The previous prime is 7791324131. The next prime is 7791324157. The reversal of 7791324133 is 3314231977.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6282623169 + 1508700964 = 79263^2 + 38842^2 .

It is a cyclic number.

It is not a de Polignac number, because 7791324133 - 2¹ = 7791324131 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7791324131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3002298 + ... + 3004891.

It is an arithmetic number, because the mean of its divisors is an integer number (1949333155).

Almost surely, 2^7791324133 is an apocalyptic number.

It is an amenable number.

7791324133 is a deficient number, since it is larger than the sum of its proper divisors (6008487).

7791324133 is a wasteful number, since it uses less digits than its factorization.

7791324133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6008486.

The product of its digits is 95256, while the sum is 40.

The square root of 7791324133 is about 88268.4775726873. The cubic root of 7791324133 is about 1982.4569144121.

The spelling of 7791324133 in words is "seven billion, seven hundred ninety-one million, three hundred twenty-four thousand, one hundred thirty-three".