11861867254 has 16 divisors (see below), whose sum is σ = 18209763792. Its totient is φ = 5791994208.

The previous prime is 11861867243. The next prime is 11861867273. The reversal of 11861867254 is 45276816811.

It is a junction number, because it is equal to n+sod(n) for n = 11861867198 and 11861867207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 802192 + ... + 816844.

It is an arithmetic number, because the mean of its divisors is an integer number (1138110237).

Almost surely, 2^11861867254 is an apocalyptic number.

11861867254 is a deficient number, since it is larger than the sum of its proper divisors (6347896538).

11861867254 is a wasteful number, since it uses less digits than its factorization.

11861867254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24111.

The product of its digits is 645120, while the sum is 49.

The spelling of 11861867254 in words is "eleven billion, eight hundred sixty-one million, eight hundred sixty-seven thousand, two hundred fifty-four".