7427444136431 has 8 divisors (see below), whose sum is σ = 8105793596928. Its totient is φ = 6749615887000.

The previous prime is 7427444136401. The next prime is 7427444136451. The reversal of 7427444136431 is 1346314447247.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7427444136431 - 2³⁰ = 7426370394607 is a prime.

It is a super-2 number, since 2×7427444136431² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7427444136431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7427444136401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130272965 + ... + 130329966.

It is an arithmetic number, because the mean of its divisors is an integer number (1013224199616).

Almost surely, 2^{7427444136431} is an apocalyptic number.

7427444136431 is a deficient number, since it is larger than the sum of its proper divisors (678349460497).

7427444136431 is a wasteful number, since it uses less digits than its factorization.

7427444136431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260605533.

The product of its digits is 5419008, while the sum is 50.

The spelling of 7427444136431 in words is "seven trillion, four hundred twenty-seven billion, four hundred forty-four million, one hundred thirty-six thousand, four hundred thirty-one".