129452161660 has 24 divisors (see below), whose sum is σ = 271923746976. Its totient is φ = 51766729920.

The previous prime is 129452161651. The next prime is 129452161667. The reversal of 129452161660 is 66161254921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129452161667) 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, 808167 + ... + 955006.

It is an arithmetic number, because the mean of its divisors is an integer number (11330156124).

Almost surely, 2^129452161660 is an apocalyptic number.

129452161660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129452161660 is an abundant number, since it is smaller than the sum of its proper divisors (142471585316).

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

129452161660 is a wasteful number, since it uses less digits than its factorization.

129452161660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1766853 (or 1766851 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 129452161660 in words is "one hundred twenty-nine billion, four hundred fifty-two million, one hundred sixty-one thousand, six hundred sixty".