129418424889 has 16 divisors (see below), whose sum is σ = 185951640000. Its totient is φ = 79590655296.

The previous prime is 129418424867. The next prime is 129418424899. The reversal of 129418424889 is 988424814921.

It is not a de Polignac number, because 129418424889 - 2²⁸ = 129149989433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129418424819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1010739 + ... + 1131560.

It is an arithmetic number, because the mean of its divisors is an integer number (11621977500).

Almost surely, 2^129418424889 is an apocalyptic number.

It is an amenable number.

129418424889 is a deficient number, since it is larger than the sum of its proper divisors (56533215111).

129418424889 is a wasteful number, since it uses less digits than its factorization.

129418424889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143864.

The product of its digits is 10616832, while the sum is 60.

The spelling of 129418424889 in words is "one hundred twenty-nine billion, four hundred eighteen million, four hundred twenty-four thousand, eight hundred eighty-nine".