1266054345 has 48 divisors (see below), whose sum is σ = 2386434960. Its totient is φ = 618319872.

The previous prime is 1266054337. The next prime is 1266054359. The reversal of 1266054345 is 5434506621.

1266054345 is a `hidden beast` number, since 1 + 2 + 6 + 605 + 4 + 3 + 45 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 238146624 + 1027907721 = 15432^2 + 32061^2 .

It is not a de Polignac number, because 1266054345 - 2³ = 1266054337 is a prime.

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 47 ways as a sum of consecutive naturals, for example, 5941 + ... + 50669.

It is an arithmetic number, because the mean of its divisors is an integer number (49717395).

Almost surely, 2^1266054345 is an apocalyptic number.

1266054345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1266054345 is a deficient number, since it is larger than the sum of its proper divisors (1120380615).

1266054345 is a wasteful number, since it uses less digits than its factorization.

1266054345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44794 (or 44791 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 1266054345 is about 35581.6574234534. The cubic root of 1266054345 is about 1081.8094794855.

The spelling of 1266054345 in words is "one billion, two hundred sixty-six million, fifty-four thousand, three hundred forty-five".