812101272234813 has 48 divisors (see below), whose sum is σ = 1335900239466624. Its totient is φ = 470576223406080.

The previous prime is 812101272234809. The next prime is 812101272234821. The reversal of 812101272234813 is 318432272101218.

812101272234813 is a `hidden beast` number, since 8 + 1 + 21 + 0 + 1 + 272 + 2 + 348 + 13 = 666.

It is not a de Polignac number, because 812101272234813 - 2² = 812101272234809 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812101272234803) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 73278856 + ... + 83630097.

It is an arithmetic number, because the mean of its divisors is an integer number (27831254988888).

Almost surely, 2^{812101272234813} is an apocalyptic number.

It is an amenable number.

812101272234813 is a deficient number, since it is larger than the sum of its proper divisors (523798967231811).

812101272234813 is a wasteful number, since it uses less digits than its factorization.

812101272234813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156911266 (or 156911263 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The spelling of 812101272234813 in words is "eight hundred twelve trillion, one hundred one billion, two hundred seventy-two million, two hundred thirty-four thousand, eight hundred thirteen".