129891630348 has 48 divisors (see below), whose sum is σ = 345857604960. Its totient is φ = 42127013952.

The previous prime is 129891630313. The next prime is 129891630359. The reversal of 129891630348 is 843036198921.

129891630348 is a `hidden beast` number, since 1 + 298 + 9 + 1 + 6 + 3 + 0 + 348 = 666.

It is a super-2 number, since 2×129891630348² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 129891630294 and 129891630303.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16248711 + ... + 16256702.

It is an arithmetic number, because the mean of its divisors is an integer number (7205366770).

Almost surely, 2^129891630348 is an apocalyptic number.

129891630348 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

129891630348 is an abundant number, since it is smaller than the sum of its proper divisors (215965974612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129891630348 is a wasteful number, since it uses less digits than its factorization.

129891630348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32505463 (or 32505455 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The spelling of 129891630348 in words is "one hundred twenty-nine billion, eight hundred ninety-one million, six hundred thirty thousand, three hundred forty-eight".