1165201550900 has 36 divisors (see below), whose sum is σ = 2677221920268. Its totient is φ = 438664112640.

The previous prime is 1165201550857. The next prime is 1165201550927. The reversal of 1165201550900 is 90551025611.

It can be written as a sum of positive squares in 6 ways, for example, as 9671148964 + 1155530401936 = 98342^2 + 1074956^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 342704639 + ... + 342708038.

It is an arithmetic number, because the mean of its divisors is an integer number (74367275563).

Almost surely, 2^{1165201550900} is an apocalyptic number.

1165201550900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1165201550900 is an abundant number, since it is smaller than the sum of its proper divisors (1512020369368).

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

1165201550900 is a wasteful number, since it uses less digits than its factorization.

1165201550900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685412708 (or 685412701 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 35.

The spelling of 1165201550900 in words is "one trillion, one hundred sixty-five billion, two hundred one million, five hundred fifty thousand, nine hundred".