747789987747 has 8 divisors (see below), whose sum is σ = 1087694527680. Its totient is φ = 453206053160.

The previous prime is 747789987709. The next prime is 747789987751.

747789987747 is nontrivially palindromic in base 10.

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 747789987747 - 2⁶ = 747789987683 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 747789987747.

It is not an unprimeable number, because it can be changed into a prime (747789987757) 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, 11330151297 + ... + 11330151362.

It is an arithmetic number, because the mean of its divisors is an integer number (135961815960).

Almost surely, 2^747789987747 is an apocalyptic number.

747789987747 is a deficient number, since it is larger than the sum of its proper divisors (339904539933).

747789987747 is a wasteful number, since it uses less digits than its factorization.

747789987747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22660302673.

The product of its digits is 9758278656, while the sum is 84.

The spelling of 747789987747 in words is "seven hundred forty-seven billion, seven hundred eighty-nine million, nine hundred eighty-seven thousand, seven hundred forty-seven".