11835725778 has 32 divisors (see below), whose sum is σ = 26373323520. Its totient is φ = 3934485360.

The previous prime is 11835725753. The next prime is 11835725801. The reversal of 11835725778 is 87752753811.

11835725778 is a `hidden beast` number, since 1 + 18 + 3 + 57 + 2 + 577 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 278793 + ... + 318428.

It is an arithmetic number, because the mean of its divisors is an integer number (824166360).

Almost surely, 2^11835725778 is an apocalyptic number.

11835725778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11835725778 is an abundant number, since it is smaller than the sum of its proper divisors (14537597742).

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

11835725778 is a wasteful number, since it uses less digits than its factorization.

11835725778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597599 (or 597593 counting only the distinct ones).

The product of its digits is 3292800, while the sum is 54.

The spelling of 11835725778 in words is "eleven billion, eight hundred thirty-five million, seven hundred twenty-five thousand, seven hundred seventy-eight".