191453854456 has 32 divisors (see below), whose sum is σ = 369162198000. Its totient is φ = 93047063296.

The previous prime is 191453854451. The next prime is 191453854499. The reversal of 191453854456 is 654458354191.

191453854456 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 191453854397 and 191453854406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191453854451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2236771 + ... + 2320786.

Almost surely, 2^191453854456 is an apocalyptic number.

It is an amenable number.

191453854456 is a deficient number, since it is larger than the sum of its proper divisors (177708343544).

191453854456 is a wasteful number, since it uses less digits than its factorization.

191453854456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4557711 (or 4557707 counting only the distinct ones).

The product of its digits is 10368000, while the sum is 55.

The spelling of 191453854456 in words is "one hundred ninety-one billion, four hundred fifty-three million, eight hundred fifty-four thousand, four hundred fifty-six".