11694748537 has 4 divisors (see below), whose sum is σ = 11695761396. Its totient is φ = 11693735680.

The previous prime is 11694748531. The next prime is 11694748547. The reversal of 11694748537 is 73584749611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4430766096 + 7263982441 = 66564^2 + 85229^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11694748537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11694748531) 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, 488908 + ... + 512269.

It is an arithmetic number, because the mean of its divisors is an integer number (2923940349).

Almost surely, 2^11694748537 is an apocalyptic number.

It is an amenable number.

11694748537 is a deficient number, since it is larger than the sum of its proper divisors (1012859).

11694748537 is a wasteful number, since it uses less digits than its factorization.

11694748537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012858.

The product of its digits is 5080320, while the sum is 55.

The spelling of 11694748537 in words is "eleven billion, six hundred ninety-four million, seven hundred forty-eight thousand, five hundred thirty-seven".