11750351821 has 6 divisors (see below), whose sum is σ = 12723753930. Its totient is φ = 10846478448.

The previous prime is 11750351801. The next prime is 11750351831. The reversal of 11750351821 is 12815305711.

It can be written as a sum of positive squares in 3 ways, for example, as 941630596 + 10808721225 = 30686^2 + 103965^2 .

It is not a de Polignac number, because 11750351821 - 2³¹ = 9602868173 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 (11750351801) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34764186 + ... + 34764523.

It is an arithmetic number, because the mean of its divisors is an integer number (2120625655).

Almost surely, 2^11750351821 is an apocalyptic number.

It is an amenable number.

11750351821 is a deficient number, since it is larger than the sum of its proper divisors (973402109).

11750351821 is an equidigital number, since it uses as much as digits as its factorization.

11750351821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69528735 (or 69528722 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 34.

The spelling of 11750351821 in words is "eleven billion, seven hundred fifty million, three hundred fifty-one thousand, eight hundred twenty-one".