129747915382828 has 96 divisors (see below), whose sum is σ = 237530084520960. Its totient is φ = 61965712972800.

The previous prime is 129747915382801. The next prime is 129747915382879. The reversal of 129747915382828 is 828283519747921.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2227900126 + ... + 2227958362.

It is an arithmetic number, because the mean of its divisors is an integer number (2474271713760).

Almost surely, 2^{129747915382828} is an apocalyptic number.

It is an amenable number.

129747915382828 is a deficient number, since it is larger than the sum of its proper divisors (107782169138132).

129747915382828 is a wasteful number, since it uses less digits than its factorization.

129747915382828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59927 (or 59925 counting only the distinct ones).

The product of its digits is 975421440, while the sum is 76.

The spelling of 129747915382828 in words is "one hundred twenty-nine trillion, seven hundred forty-seven billion, nine hundred fifteen million, three hundred eighty-two thousand, eight hundred twenty-eight".