612127878794 has 12 divisors (see below), whose sum is σ = 975380236854. Its totient is φ = 288060177984.

The previous prime is 612127878793. The next prime is 612127878797. The reversal of 612127878794 is 497878721216.

It can be written as a sum of positive squares in 3 ways, for example, as 542174505625 + 69953373169 = 736325^2 + 264487^2 .

It is not an unprimeable number, because it can be changed into a prime (612127878793) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 529521809 + ... + 529522964.

Almost surely, 2^612127878794 is an apocalyptic number.

612127878794 is a deficient number, since it is larger than the sum of its proper divisors (363252358060).

612127878794 is a wasteful number, since it uses less digits than its factorization.

612127878794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059044809 (or 1059044792 counting only the distinct ones).

The product of its digits is 18966528, while the sum is 62.

The spelling of 612127878794 in words is "six hundred twelve billion, one hundred twenty-seven million, eight hundred seventy-eight thousand, seven hundred ninety-four".