1260129564000 has 288 divisors, whose sum is σ = 4473753560640. Its totient is φ = 335917824000.

The previous prime is 1260129563983. The next prime is 1260129564077. The reversal of 1260129564000 is 4659210621.

1260129564000 is a `hidden beast` number, since 1 + 2 + 6 + 0 + 1 + 2 + 9 + 5 + 640 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 168440260 + ... + 168447740.

It is an arithmetic number, because the mean of its divisors is an integer number (15533866530).

Almost surely, 2^{1260129564000} is an apocalyptic number.

1260129564000 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 1260129564000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2236876780320).

1260129564000 is an abundant number, since it is smaller than the sum of its proper divisors (3213623996640).

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

1260129564000 is a wasteful number, since it uses less digits than its factorization.

1260129564000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12191 (or 12170 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 1260129564000 in words is "one trillion, two hundred sixty billion, one hundred twenty-nine million, five hundred sixty-four thousand".