1173617786880 has 1200 divisors, whose sum is σ = 5248008855936. Its totient is φ = 243762462720.

The previous prime is 1173617786849. The next prime is 1173617786903. The reversal of 1173617786880 is 886877163711.

1173617786880 is a `hidden beast` number, since 1 + 1 + 7 + 3 + 617 + 7 + 8 + 6 + 8 + 8 + 0 = 666.

It is a super-2 number, since 2×1173617786880² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 510933892 + ... + 510936188.

Almost surely, 2^{1173617786880} is an apocalyptic number.

1173617786880 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 1173617786880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2624004427968).

1173617786880 is an abundant number, since it is smaller than the sum of its proper divisors (4074391069056).

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

1173617786880 is an equidigital number, since it uses as much as digits as its factorization.

1173617786880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360 (or 2325 counting only the distinct ones).

The product of its (nonzero) digits is 18966528, while the sum is 63.

The spelling of 1173617786880 in words is "one trillion, one hundred seventy-three billion, six hundred seventeen million, seven hundred eighty-six thousand, eight hundred eighty".