11778542213 has 8 divisors (see below), whose sum is σ = 12339625536. Its totient is φ = 11221540000.

The previous prime is 11778542203. The next prime is 11778542221. The reversal of 11778542213 is 31224587711.

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 11778542213 - 2¹⁸ = 11778280069 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11778542203) 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, 1014368 + ... + 1025913.

It is an arithmetic number, because the mean of its divisors is an integer number (1542453192).

Almost surely, 2^11778542213 is an apocalyptic number.

It is an amenable number.

11778542213 is a deficient number, since it is larger than the sum of its proper divisors (561083323).

11778542213 is a wasteful number, since it uses less digits than its factorization.

11778542213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040555.

The product of its digits is 94080, while the sum is 41.

The spelling of 11778542213 in words is "eleven billion, seven hundred seventy-eight million, five hundred forty-two thousand, two hundred thirteen".