812464654774 has 4 divisors (see below), whose sum is σ = 1218696982164. Its totient is φ = 406232327386.

The previous prime is 812464654769. The next prime is 812464654811. The reversal of 812464654774 is 477456464218.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 477456464218 = 2 ⋅238728232109.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203116163692 + ... + 203116163695.

It is an arithmetic number, because the mean of its divisors is an integer number (304674245541).

Almost surely, 2^812464654774 is an apocalyptic number.

812464654774 is a deficient number, since it is larger than the sum of its proper divisors (406232327390).

812464654774 is a wasteful number, since it uses less digits than its factorization.

812464654774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406232327389.

The product of its digits is 36126720, while the sum is 58.

The spelling of 812464654774 in words is "eight hundred twelve billion, four hundred sixty-four million, six hundred fifty-four thousand, seven hundred seventy-four".