129013875381 has 8 divisors (see below), whose sum is σ = 182137235904. Its totient is φ = 80949882560.

The previous prime is 129013875379. The next prime is 129013875383. The reversal of 129013875381 is 183578310921.

It is an interprime number because it is at equal distance from previous prime (129013875379) and next prime (129013875383).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 129013875381 - 2¹ = 129013875379 is a prime.

It is a super-2 number, since 2×129013875381² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 129013875381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129013875383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1264841865 + ... + 1264841966.

It is an arithmetic number, because the mean of its divisors is an integer number (22767154488).

Almost surely, 2^129013875381 is an apocalyptic number.

It is an amenable number.

129013875381 is a deficient number, since it is larger than the sum of its proper divisors (53123360523).

129013875381 is a wasteful number, since it uses less digits than its factorization.

129013875381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2529683851.

The product of its (nonzero) digits is 362880, while the sum is 48.

The spelling of 129013875381 in words is "one hundred twenty-nine billion, thirteen million, eight hundred seventy-five thousand, three hundred eighty-one".