12905750729547 has 64 divisors (see below), whose sum is σ = 20630292480000. Its totient is φ = 7926613478784.

The previous prime is 12905750729519. The next prime is 12905750729569. The reversal of 12905750729547 is 74592705750921.

It is a happy number.

12905750729547 is a `hidden beast` number, since 1 + 2 + 9 + 0 + 57 + 507 + 29 + 54 + 7 = 666.

It is not a de Polignac number, because 12905750729547 - 2⁷ = 12905750729419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12905750729747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 570055854 + ... + 570078492.

It is an arithmetic number, because the mean of its divisors is an integer number (322348320000).

Almost surely, 2^{12905750729547} is an apocalyptic number.

12905750729547 is a deficient number, since it is larger than the sum of its proper divisors (7724541750453).

12905750729547 is a wasteful number, since it uses less digits than its factorization.

12905750729547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25737 (or 25731 counting only the distinct ones).

The product of its (nonzero) digits is 55566000, while the sum is 63.

The spelling of 12905750729547 in words is "twelve trillion, nine hundred five billion, seven hundred fifty million, seven hundred twenty-nine thousand, five hundred forty-seven".