129247500523 has 32 divisors (see below), whose sum is σ = 134147119680. Its totient is φ = 124482969600.

The previous prime is 129247500517. The next prime is 129247500563. The reversal of 129247500523 is 325005742921.

It is a cyclic number.

It is not a de Polignac number, because 129247500523 - 2⁵ = 129247500491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129247500563) 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 31 ways as a sum of consecutive naturals, for example, 197928465 + ... + 197929117.

It is an arithmetic number, because the mean of its divisors is an integer number (4192097490).

Almost surely, 2^129247500523 is an apocalyptic number.

129247500523 is a deficient number, since it is larger than the sum of its proper divisors (4899619157).

129247500523 is a wasteful number, since it uses less digits than its factorization.

129247500523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167.

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 129247500523 in words is "one hundred twenty-nine billion, two hundred forty-seven million, five hundred thousand, five hundred twenty-three".