11778617495 has 8 divisors (see below), whose sum is σ = 14138905920. Its totient is φ = 9419850720.

The previous prime is 11778617483. The next prime is 11778617497. The reversal of 11778617495 is 59471687711.

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

It is not a de Polignac number, because 11778617495 - 2³² = 7483650199 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11778617495.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11778617497) 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, 363311 + ... + 394400.

It is an arithmetic number, because the mean of its divisors is an integer number (1767363240).

Almost surely, 2^11778617495 is an apocalyptic number.

11778617495 is a deficient number, since it is larger than the sum of its proper divisors (2360288425).

11778617495 is an equidigital number, since it uses as much as digits as its factorization.

11778617495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760825.

The product of its digits is 2963520, while the sum is 56.

The spelling of 11778617495 in words is "eleven billion, seven hundred seventy-eight million, six hundred seventeen thousand, four hundred ninety-five".