129315137381 has 16 divisors (see below), whose sum is σ = 136329553920. Its totient is φ = 122498593920.

The previous prime is 129315137353. The next prime is 129315137383. The reversal of 129315137381 is 183731513921.

It is a cyclic number.

It is not a de Polignac number, because 129315137381 - 2⁶ = 129315137317 is a prime.

It is a super-2 number, since 2×129315137381² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129315137383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 651260 + ... + 826298.

It is an arithmetic number, because the mean of its divisors is an integer number (8520597120).

Almost surely, 2^129315137381 is an apocalyptic number.

It is an amenable number.

129315137381 is a deficient number, since it is larger than the sum of its proper divisors (7014416539).

129315137381 is a wasteful number, since it uses less digits than its factorization.

129315137381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175604.

The product of its digits is 136080, while the sum is 44.

The spelling of 129315137381 in words is "one hundred twenty-nine billion, three hundred fifteen million, one hundred thirty-seven thousand, three hundred eighty-one".