129618014649 has 48 divisors (see below), whose sum is σ = 199485358080. Its totient is φ = 74562750720.

The previous prime is 129618014629. The next prime is 129618014651. The reversal of 129618014649 is 946410816921.

It is not a de Polignac number, because 129618014649 - 2²⁴ = 129601237433 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (129618014629) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 383752 + ... + 637574.

It is an arithmetic number, because the mean of its divisors is an integer number (4155944960).

Almost surely, 2^129618014649 is an apocalyptic number.

129618014649 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

129618014649 is a deficient number, since it is larger than the sum of its proper divisors (69867343431).

129618014649 is a wasteful number, since it uses less digits than its factorization.

129618014649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253910 (or 253893 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 51.

The spelling of 129618014649 in words is "one hundred twenty-nine billion, six hundred eighteen million, fourteen thousand, six hundred forty-nine".