772181091345 has 16 divisors (see below), whose sum is σ = 1235575706112. Its totient is φ = 411801262080.

The previous prime is 772181091323. The next prime is 772181091379. The reversal of 772181091345 is 543190181277.

It is not a de Polignac number, because 772181091345 - 2¹⁴ = 772181074961 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 772181091294 and 772181091303.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1567152 + ... + 2000081.

It is an arithmetic number, because the mean of its divisors is an integer number (77223481632).

Almost surely, 2^772181091345 is an apocalyptic number.

It is an amenable number.

772181091345 is a deficient number, since it is larger than the sum of its proper divisors (463394614767).

772181091345 is a wasteful number, since it uses less digits than its factorization.

772181091345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3581672.

The product of its (nonzero) digits is 423360, while the sum is 48.

The spelling of 772181091345 in words is "seven hundred seventy-two billion, one hundred eighty-one million, ninety-one thousand, three hundred forty-five".