11720287837 has 8 divisors (see below), whose sum is σ = 11815248896. Its totient is φ = 11625368832.

The previous prime is 11720287801. The next prime is 11720287841. The reversal of 11720287837 is 73878202711.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11720287837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11720287847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 797518 + ... + 812080.

It is an arithmetic number, because the mean of its divisors is an integer number (1476906112).

Almost surely, 2^11720287837 is an apocalyptic number.

It is an amenable number.

11720287837 is a deficient number, since it is larger than the sum of its proper divisors (94961059).

11720287837 is a wasteful number, since it uses less digits than its factorization.

11720287837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21027.

The product of its (nonzero) digits is 263424, while the sum is 46.

The spelling of 11720287837 in words is "eleven billion, seven hundred twenty million, two hundred eighty-seven thousand, eight hundred thirty-seven".