11778955727839 has 8 divisors (see below), whose sum is σ = 12257171118720. Its totient is φ = 11310026072856.

The previous prime is 11778955727783. The next prime is 11778955727867. The reversal of 11778955727839 is 93872755987711.

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 11778955727839 - 2⁹ = 11778955727327 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 (11778955724839) 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, 2321431387 + ... + 2321436460.

It is an arithmetic number, because the mean of its divisors is an integer number (1532146389840).

Almost surely, 2^{11778955727839} is an apocalyptic number.

11778955727839 is a deficient number, since it is larger than the sum of its proper divisors (478215390881).

11778955727839 is an equidigital number, since it uses as much as digits as its factorization.

11778955727839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4642867949.

The product of its digits is 1867017600, while the sum is 79.

The spelling of 11778955727839 in words is "eleven trillion, seven hundred seventy-eight billion, nine hundred fifty-five million, seven hundred twenty-seven thousand, eight hundred thirty-nine".