129232145497 has 32 divisors (see below), whose sum is σ = 166264340480. Its totient is φ = 97698519360.

The previous prime is 129232145489. The next prime is 129232145501. The reversal of 129232145497 is 794541232921.

It is a happy number.

It is not a de Polignac number, because 129232145497 - 2³ = 129232145489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 129232145497.

It is not an unprimeable number, because it can be changed into a prime (129232145297) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67083 + ... + 512800.

It is an arithmetic number, because the mean of its divisors is an integer number (5195760640).

Almost surely, 2^129232145497 is an apocalyptic number.

It is an amenable number.

129232145497 is a deficient number, since it is larger than the sum of its proper divisors (37032194983).

129232145497 is a wasteful number, since it uses less digits than its factorization.

129232145497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580013.

The product of its digits is 1088640, while the sum is 49.

The spelling of 129232145497 in words is "one hundred twenty-nine billion, two hundred thirty-two million, one hundred forty-five thousand, four hundred ninety-seven".