129498910545 has 32 divisors (see below), whose sum is σ = 217658016000. Its totient is φ = 65619809024.

The previous prime is 129498910537. The next prime is 129498910549. The reversal of 129498910545 is 545019894921.

It is a cyclic number.

It is not a de Polignac number, because 129498910545 - 2³ = 129498910537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129498910549) 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, 1208190 + ... + 1310999.

It is an arithmetic number, because the mean of its divisors is an integer number (6801813000).

Almost surely, 2^129498910545 is an apocalyptic number.

129498910545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

129498910545 is a deficient number, since it is larger than the sum of its proper divisors (88159105455).

129498910545 is a wasteful number, since it uses less digits than its factorization.

129498910545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2519369.

The product of its (nonzero) digits is 4665600, while the sum is 57.

The spelling of 129498910545 in words is "one hundred twenty-nine billion, four hundred ninety-eight million, nine hundred ten thousand, five hundred forty-five".