13129081680 has 160 divisors (see below), whose sum is σ = 47815689600. Its totient is φ = 2937968640.

The previous prime is 13129081663. The next prime is 13129081687. The reversal of 13129081680 is 8618092131.

It is a super-2 number, since 2×13129081680² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13129081687) 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, 156955 + ... + 225594.

It is an arithmetic number, because the mean of its divisors is an integer number (298848060).

Almost surely, 2^13129081680 is an apocalyptic number.

13129081680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13129081680 is an abundant number, since it is smaller than the sum of its proper divisors (34686607920).

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

13129081680 is a wasteful number, since it uses less digits than its factorization.

13129081680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382589 (or 382583 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 39.

The spelling of 13129081680 in words is "thirteen billion, one hundred twenty-nine million, eighty-one thousand, six hundred eighty".