11994698837 has 4 divisors (see below), whose sum is σ = 13085126016. Its totient is φ = 10904271660.

The previous prime is 11994698819. The next prime is 11994698843. The reversal of 11994698837 is 73889649911.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11994698837 - 2⁸ = 11994698581 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 (11994698867) 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, 545213573 + ... + 545213594.

It is an arithmetic number, because the mean of its divisors is an integer number (3271281504).

Almost surely, 2^11994698837 is an apocalyptic number.

It is an amenable number.

11994698837 is a deficient number, since it is larger than the sum of its proper divisors (1090427179).

11994698837 is a wasteful number, since it uses less digits than its factorization.

11994698837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090427178.

The product of its digits is 23514624, while the sum is 65.

The spelling of 11994698837 in words is "eleven billion, nine hundred ninety-four million, six hundred ninety-eight thousand, eight hundred thirty-seven".