11838891278954 has 8 divisors (see below), whose sum is σ = 17758445694948. Its totient is φ = 5919409380640.

The previous prime is 11838891278947. The next prime is 11838891279067. The reversal of 11838891278954 is 45987219883811.

It can be written as a sum of positive squares in 2 ways, for example, as 10919158492225 + 919732786729 = 3304415^2 + 959027^2 .

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, 17719427 + ... + 18375414.

Almost surely, 2^{11838891278954} is an apocalyptic number.

11838891278954 is a deficient number, since it is larger than the sum of its proper divisors (5919554415994).

11838891278954 is a wasteful number, since it uses less digits than its factorization.

11838891278954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36258840.

The product of its digits is 278691840, while the sum is 74.

The spelling of 11838891278954 in words is "eleven trillion, eight hundred thirty-eight billion, eight hundred ninety-one million, two hundred seventy-eight thousand, nine hundred fifty-four".