1165026985200 has 900 divisors, whose sum is σ = 4550391814320. Its totient is φ = 285332336640.

The previous prime is 1165026985127. The next prime is 1165026985211. The reversal of 1165026985200 is 25896205611.

1165026985200 is a `hidden beast` number, since 1 + 1 + 6 + 502 + 6 + 98 + 52 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (900).

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 179 ways as a sum of consecutive naturals, for example, 1440082396 + ... + 1440083204.

Almost surely, 2^{1165026985200} is an apocalyptic number.

1165026985200 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 1165026985200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2275195907160).

1165026985200 is an abundant number, since it is smaller than the sum of its proper divisors (3385364829120).

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

1165026985200 is a wasteful number, since it uses less digits than its factorization.

1165026985200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128 (or 1095 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 1165026985200 in words is "one trillion, one hundred sixty-five billion, twenty-six million, nine hundred eighty-five thousand, two hundred".