11349974857 has 8 divisors (see below), whose sum is σ = 12453674184. Its totient is φ = 10279221888.

The previous prime is 11349974827. The next prime is 11349974863. The reversal of 11349974857 is 75847994311.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 219513856 + 11130461001 = 14816^2 + 105501^2 .

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

It is not a de Polignac number, because 11349974857 - 2³¹ = 9202491209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11349974827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8235868 + ... + 8237245.

It is an arithmetic number, because the mean of its divisors is an integer number (1556709273).

Almost surely, 2^11349974857 is an apocalyptic number.

It is an amenable number.

11349974857 is a deficient number, since it is larger than the sum of its proper divisors (1103699327).

11349974857 is a wasteful number, since it uses less digits than its factorization.

11349974857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16473179.

The product of its digits is 7620480, while the sum is 58.

It can be divided in two parts, 113499 and 74857, that added together give a square (188356 = 434²).

The spelling of 11349974857 in words is "eleven billion, three hundred forty-nine million, nine hundred seventy-four thousand, eight hundred fifty-seven".