812049508547 has 8 divisors (see below), whose sum is σ = 838769592192. Its totient is φ = 785362233600.

The previous prime is 812049508531. The next prime is 812049508631. The reversal of 812049508547 is 745805940218.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 812049508547 - 2⁴ = 812049508531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (812049504547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8151854 + ... + 8250867.

It is an arithmetic number, because the mean of its divisors is an integer number (104846199024).

Almost surely, 2^812049508547 is an apocalyptic number.

812049508547 is a deficient number, since it is larger than the sum of its proper divisors (26720083645).

812049508547 is a wasteful number, since it uses less digits than its factorization.

812049508547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16404349.

The product of its (nonzero) digits is 3225600, while the sum is 53.

The spelling of 812049508547 in words is "eight hundred twelve billion, forty-nine million, five hundred eight thousand, five hundred forty-seven".