2765381796945 has 32 divisors (see below), whose sum is σ = 4919180323200. Its totient is φ = 1473986486592.

The previous prime is 2765381796923. The next prime is 2765381796997. The reversal of 2765381796945 is 5496971835672.

2765381796945 is a `hidden beast` number, since 2 + 76 + 5 + 381 + 7 + 96 + 94 + 5 = 666.

It is not a de Polignac number, because 2765381796945 - 2¹¹ = 2765381794897 is a prime.

It is a super-2 number, since 2×2765381796945² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5911387 + ... + 6362016.

It is an arithmetic number, because the mean of its divisors is an integer number (153724385100).

Almost surely, 2^{2765381796945} is an apocalyptic number.

It is an amenable number.

2765381796945 is a deficient number, since it is larger than the sum of its proper divisors (2153798526255).

2765381796945 is a wasteful number, since it uses less digits than its factorization.

2765381796945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12275086 (or 12275080 counting only the distinct ones).

The product of its digits is 685843200, while the sum is 72.

The spelling of 2765381796945 in words is "two trillion, seven hundred sixty-five billion, three hundred eighty-one million, seven hundred ninety-six thousand, nine hundred forty-five".