129980927340 has 288 divisors, whose sum is σ = 458834933760. Its totient is φ = 30493584000.

The previous prime is 129980927339. The next prime is 129980927381. The reversal of 129980927340 is 43729089921.

129980927340 is a `hidden beast` number, since 1 + 299 + 8 + 0 + 9 + 2 + 7 + 340 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1993455 + ... + 2057625.

Almost surely, 2^129980927340 is an apocalyptic number.

129980927340 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 129980927340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229417466880).

129980927340 is an abundant number, since it is smaller than the sum of its proper divisors (328854006420).

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

129980927340 is a wasteful number, since it uses less digits than its factorization.

129980927340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64242 (or 64223 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The spelling of 129980927340 in words is "one hundred twenty-nine billion, nine hundred eighty million, nine hundred twenty-seven thousand, three hundred forty".