11909725378 has 8 divisors (see below), whose sum is σ = 18048759372. Its totient is φ = 5893472256.

The previous prime is 11909725367. The next prime is 11909725391. The reversal of 11909725378 is 87352790911.

It can be written as a sum of positive squares in 2 ways, for example, as 11357804329 + 551921049 = 106573^2 + 23493^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30694975 + ... + 30695362.

Almost surely, 2^11909725378 is an apocalyptic number.

11909725378 is a deficient number, since it is larger than the sum of its proper divisors (6139033994).

11909725378 is an equidigital number, since it uses as much as digits as its factorization.

11909725378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61390436.

The product of its (nonzero) digits is 952560, while the sum is 52.

The spelling of 11909725378 in words is "eleven billion, nine hundred nine million, seven hundred twenty-five thousand, three hundred seventy-eight".