772394643243 has 8 divisors (see below), whose sum is σ = 1144288360400. Its totient is φ = 514929762144.

The previous prime is 772394643199. The next prime is 772394643259. The reversal of 772394643243 is 342346493277.

772394643243 is a `hidden beast` number, since 7 + 7 + 2 + 394 + 6 + 4 + 3 + 243 = 666.

It is not a de Polignac number, because 772394643243 - 2¹⁰ = 772394642219 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 772394643243.

It is not an unprimeable number, because it can be changed into a prime (772394641243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14303604478 + ... + 14303604531.

It is an arithmetic number, because the mean of its divisors is an integer number (143036045050).

Almost surely, 2^772394643243 is an apocalyptic number.

772394643243 is a deficient number, since it is larger than the sum of its proper divisors (371893717157).

772394643243 is a wasteful number, since it uses less digits than its factorization.

772394643243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28607209018 (or 28607209012 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 54.

The spelling of 772394643243 in words is "seven hundred seventy-two billion, three hundred ninety-four million, six hundred forty-three thousand, two hundred forty-three".