129905576745 has 16 divisors (see below), whose sum is σ = 237541626240. Its totient is φ = 59385406464.

The previous prime is 129905576737. The next prime is 129905576753. The reversal of 129905576745 is 547675509921.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (129905576737) and next prime (129905576753).

It is not a de Polignac number, because 129905576745 - 2³ = 129905576737 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 618597880 + ... + 618598089.

It is an arithmetic number, because the mean of its divisors is an integer number (14846351640).

Almost surely, 2^129905576745 is an apocalyptic number.

129905576745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

129905576745 is a deficient number, since it is larger than the sum of its proper divisors (107636049495).

129905576745 is a wasteful number, since it uses less digits than its factorization.

129905576745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237195984.

The product of its (nonzero) digits is 23814000, while the sum is 60.

The spelling of 129905576745 in words is "one hundred twenty-nine billion, nine hundred five million, five hundred seventy-six thousand, seven hundred forty-five".