129022195680 has 384 divisors, whose sum is σ = 517207541760. Its totient is φ = 29426872320.

The previous prime is 129022195669. The next prime is 129022195717. The reversal of 129022195680 is 86591220921.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14722500 + ... + 14731260.

It is an arithmetic number, because the mean of its divisors is an integer number (1346894640).

Almost surely, 2^129022195680 is an apocalyptic number.

129022195680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129022195680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258603770880).

129022195680 is an abundant number, since it is smaller than the sum of its proper divisors (388185346080).

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

129022195680 is a wasteful number, since it uses less digits than its factorization.

129022195680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9279 (or 9265 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 129022195680 in words is "one hundred twenty-nine billion, twenty-two million, one hundred ninety-five thousand, six hundred eighty".