129850611325920 has 768 divisors, whose sum is σ = 474481708968960. Its totient is φ = 33139246694400.

The previous prime is 129850611325913. The next prime is 129850611325921. The reversal of 129850611325920 is 29523116058921.

129850611325920 is a `hidden beast` number, since 1 + 2 + 9 + 8 + 5 + 0 + 6 + 11 + 32 + 592 + 0 = 666.

It is a super-2 number, since 2×129850611325920² (a number of 29 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129850611325921) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2859933939 + ... + 2859979341.

It is an arithmetic number, because the mean of its divisors is an integer number (617814725220).

Almost surely, 2^{129850611325920} is an apocalyptic number.

129850611325920 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 129850611325920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237240854484480).

129850611325920 is an abundant number, since it is smaller than the sum of its proper divisors (344631097643040).

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

129850611325920 is a wasteful number, since it uses less digits than its factorization.

129850611325920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45776 (or 45762 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 54.

The spelling of 129850611325920 in words is "one hundred twenty-nine trillion, eight hundred fifty billion, six hundred eleven million, three hundred twenty-five thousand, nine hundred twenty".