11601878478 has 8 divisors (see below), whose sum is σ = 23203756968. Its totient is φ = 3867292824.

The previous prime is 11601878467. The next prime is 11601878479. The reversal of 11601878478 is 87487810611.

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

11601878478 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 11601878478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11601878479) 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 3 ways as a sum of consecutive naturals, for example, 966823201 + ... + 966823212.

It is an arithmetic number, because the mean of its divisors is an integer number (2900469621).

Almost surely, 2^11601878478 is an apocalyptic number.

11601878478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11601878478 is a wasteful number, since it uses less digits than its factorization.

11601878478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1933646418.

The product of its (nonzero) digits is 602112, while the sum is 51.

The spelling of 11601878478 in words is "eleven billion, six hundred one million, eight hundred seventy-eight thousand, four hundred seventy-eight".