812981254906 has 8 divisors (see below), whose sum is σ = 1220593754880. Its totient is φ = 406116669948.

The previous prime is 812981254879. The next prime is 812981254931. The reversal of 812981254906 is 609452189218.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186976036 + ... + 186980383.

It is an arithmetic number, because the mean of its divisors is an integer number (152574219360).

Almost surely, 2^812981254906 is an apocalyptic number.

812981254906 is a deficient number, since it is larger than the sum of its proper divisors (407612499974).

812981254906 is a wasteful number, since it uses less digits than its factorization.

812981254906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373957508.

The product of its (nonzero) digits is 2488320, while the sum is 55.

The spelling of 812981254906 in words is "eight hundred twelve billion, nine hundred eighty-one million, two hundred fifty-four thousand, nine hundred six".