11391292897 has 8 divisors (see below), whose sum is σ = 11708235176. Its totient is φ = 11074828032.

The previous prime is 11391292883. The next prime is 11391292903. The reversal of 11391292897 is 79829219311.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3628978081 + 7762314816 = 60241^2 + 88104^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 11391292897 - 2¹¹ = 11391290849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11391293897) 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, 70698 + ... + 166675.

It is an arithmetic number, because the mean of its divisors is an integer number (1463529397).

Almost surely, 2^11391292897 is an apocalyptic number.

It is an amenable number.

11391292897 is a deficient number, since it is larger than the sum of its proper divisors (316942279).

11391292897 is a wasteful number, since it uses less digits than its factorization.

11391292897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238707.

The product of its digits is 489888, while the sum is 52.

The spelling of 11391292897 in words is "eleven billion, three hundred ninety-one million, two hundred ninety-two thousand, eight hundred ninety-seven".