12773947545 has 24 divisors (see below), whose sum is σ = 22178520000. Its totient is φ = 6801384096.

The previous prime is 12773947523. The next prime is 12773947547. The reversal of 12773947545 is 54574937721.

12773947545 is a `hidden beast` number, since 1 + 2 + 7 + 7 + 3 + 94 + 7 + 545 = 666.

It is not a de Polignac number, because 12773947545 - 2¹⁸ = 12773685401 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12773947491 and 12773947500.

It is not an unprimeable number, because it can be changed into a prime (12773947547) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 209995 + ... + 263904.

It is an arithmetic number, because the mean of its divisors is an integer number (924105000).

Almost surely, 2^12773947545 is an apocalyptic number.

12773947545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12773947545 is a deficient number, since it is larger than the sum of its proper divisors (9404572455).

12773947545 is a wasteful number, since it uses less digits than its factorization.

12773947545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474509 (or 474506 counting only the distinct ones).

The product of its digits is 7408800, while the sum is 54.

The spelling of 12773947545 in words is "twelve billion, seven hundred seventy-three million, nine hundred forty-seven thousand, five hundred forty-five".