11941785618 has 32 divisors (see below), whose sum is σ = 27306784896. Its totient is φ = 3410529408.

The previous prime is 11941785607. The next prime is 11941785629. The reversal of 11941785618 is 81658714911.

It is an interprime number because it is at equal distance from previous prime (11941785607) and next prime (11941785629).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46380 + ... + 161352.

It is an arithmetic number, because the mean of its divisors is an integer number (853337028).

Almost surely, 2^11941785618 is an apocalyptic number.

11941785618 is an abundant number, since it is smaller than the sum of its proper divisors (15364999278).

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

11941785618 is a wasteful number, since it uses less digits than its factorization.

11941785618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117458.

The product of its digits is 483840, while the sum is 51.

The spelling of 11941785618 in words is "eleven billion, nine hundred forty-one million, seven hundred eighty-five thousand, six hundred eighteen".