129487173753 has 32 divisors (see below), whose sum is σ = 204160239360. Its totient is φ = 71426315520.

The previous prime is 129487173721. The next prime is 129487173779. The reversal of 129487173753 is 357371784921.

It is not a de Polignac number, because 129487173753 - 2⁵ = 129487173721 is a prime.

It is a super-2 number, since 2×129487173753² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 129487173693 and 129487173702.

It is not an unprimeable number, because it can be changed into a prime (129487173793) 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, 3316083 + ... + 3354903.

It is an arithmetic number, because the mean of its divisors is an integer number (6380007480).

Almost surely, 2^129487173753 is an apocalyptic number.

It is an amenable number.

129487173753 is a deficient number, since it is larger than the sum of its proper divisors (74673065607).

129487173753 is a wasteful number, since it uses less digits than its factorization.

129487173753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44337.

The product of its digits is 8890560, while the sum is 57.

The spelling of 129487173753 in words is "one hundred twenty-nine billion, four hundred eighty-seven million, one hundred seventy-three thousand, seven hundred fifty-three".