71823342133 has 4 divisors (see below), whose sum is σ = 73764513580. Its totient is φ = 69882170688.

The previous prime is 71823342113. The next prime is 71823342137. The reversal of 71823342133 is 33124332817.

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 63218553489 + 8604788644 = 251433^2 + 92762^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71823342133 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 1941171409 = 71823342133 / (7 + 1 + 8 + 2 + 3 + 3 + 4 + 2 + 1 + 3 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71823342092 and 71823342101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71823342137) 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, 970585668 + ... + 970585741.

It is an arithmetic number, because the mean of its divisors is an integer number (18441128395).

Almost surely, 2^71823342133 is an apocalyptic number.

It is an amenable number.

71823342133 is a deficient number, since it is larger than the sum of its proper divisors (1941171447).

71823342133 is a wasteful number, since it uses less digits than its factorization.

71823342133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1941171446.

The product of its digits is 72576, while the sum is 37.

The spelling of 71823342133 in words is "seventy-one billion, eight hundred twenty-three million, three hundred forty-two thousand, one hundred thirty-three".