7423820753117 has 4 divisors (see below), whose sum is σ = 7679814572220. Its totient is φ = 7167826934016.

The previous prime is 7423820753081. The next prime is 7423820753171. The reversal of 7423820753117 is 7113570283247.

It is a happy number.

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 6263437214596 + 1160383538521 = 2502686^2 + 1077211^2 .

It is a cyclic number.

It is not a de Polignac number, because 7423820753117 - 2¹⁸ = 7423820490973 is a prime.

It is a super-2 number, since 2×7423820753117² (a number of 27 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 (7423820753177) 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 3 ways as a sum of consecutive naturals, for example, 127996909508 + ... + 127996909565.

It is an arithmetic number, because the mean of its divisors is an integer number (1919953643055).

Almost surely, 2^{7423820753117} is an apocalyptic number.

It is an amenable number.

7423820753117 is a deficient number, since it is larger than the sum of its proper divisors (255993819103).

7423820753117 is a wasteful number, since it uses less digits than its factorization.

7423820753117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255993819102.

The product of its (nonzero) digits is 1975680, while the sum is 50.

The spelling of 7423820753117 in words is "seven trillion, four hundred twenty-three billion, eight hundred twenty million, seven hundred fifty-three thousand, one hundred seventeen".