191166121255452 has 48 divisors (see below), whose sum is σ = 509784597073920. Its totient is φ = 54618005316672.

The previous prime is 191166121255411. The next prime is 191166121255477. The reversal of 191166121255452 is 254552121661191.

It is a junction number, because it is equal to n+sod(n) for n = 191166121255395 and 191166121255404.

It is a congruent number.

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, 13253052 + ... + 23621507.

It is an arithmetic number, because the mean of its divisors is an integer number (10620512439040).

Almost surely, 2^{191166121255452} is an apocalyptic number.

191166121255452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

191166121255452 is an abundant number, since it is smaller than the sum of its proper divisors (318618475818468).

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

191166121255452 is a wasteful number, since it uses less digits than its factorization.

191166121255452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36936290 (or 36936288 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 51.

The spelling of 191166121255452 in words is "one hundred ninety-one trillion, one hundred sixty-six billion, one hundred twenty-one million, two hundred fifty-five thousand, four hundred fifty-two".