854451156091 has 4 divisors (see below), whose sum is σ = 920178168112. Its totient is φ = 788724144072.

The previous prime is 854451156073. The next prime is 854451156103. The reversal of 854451156091 is 190651154458.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-854451156091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (854451156071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32863505991 + ... + 32863506016.

It is an arithmetic number, because the mean of its divisors is an integer number (230044542028).

Almost surely, 2^854451156091 is an apocalyptic number.

854451156091 is a deficient number, since it is larger than the sum of its proper divisors (65727012021).

854451156091 is a wasteful number, since it uses less digits than its factorization.

854451156091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65727012020.

The product of its (nonzero) digits is 864000, while the sum is 49.

The spelling of 854451156091 in words is "eight hundred fifty-four billion, four hundred fifty-one million, one hundred fifty-six thousand, ninety-one".