11787770613 has 8 divisors (see below), whose sum is σ = 15720248800. Its totient is φ = 7856903088.

The previous prime is 11787770611. The next prime is 11787770671. The reversal of 11787770613 is 31607778711.

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

It is not a de Polignac number, because 11787770613 - 2¹ = 11787770611 is a prime.

It is the 108572-nd Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11787770611) by changing a digit.

It is a nontrivial repunit in base 108571.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385483 + ... + 414936.

It is an arithmetic number, because the mean of its divisors is an integer number (1965031100).

Almost surely, 2^11787770613 is an apocalyptic number.

It is an amenable number.

11787770613 is a deficient number, since it is larger than the sum of its proper divisors (3932478187).

11787770613 is an equidigital number, since it uses as much as digits as its factorization.

11787770613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805331.

The product of its (nonzero) digits is 345744, while the sum is 48.

The spelling of 11787770613 in words is "eleven billion, seven hundred eighty-seven million, seven hundred seventy thousand, six hundred thirteen".