7442747159687 has 4 divisors (see below), whose sum is σ = 8505996753936. Its totient is φ = 6379497565440.

The previous prime is 7442747159629. The next prime is 7442747159711. The reversal of 7442747159687 is 7869517472447.

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

It is a cyclic number.

It is not a de Polignac number, because 7442747159687 - 2²⁸ = 7442478724231 is a prime.

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 7442747159687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7442747159987) 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, 531624797114 + ... + 531624797127.

It is an arithmetic number, because the mean of its divisors is an integer number (2126499188484).

Almost surely, 2^{7442747159687} is an apocalyptic number.

7442747159687 is a deficient number, since it is larger than the sum of its proper divisors (1063249594249).

7442747159687 is a wasteful number, since it uses less digits than its factorization.

7442747159687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063249594248.

The product of its digits is 663828480, while the sum is 71.

The spelling of 7442747159687 in words is "seven trillion, four hundred forty-two billion, seven hundred forty-seven million, one hundred fifty-nine thousand, six hundred eighty-seven".