1171987233090 has 32 divisors (see below), whose sum is σ = 2828483167680. Its totient is φ = 310783950144.

The previous prime is 1171987233083. The next prime is 1171987233113. The reversal of 1171987233090 is 903327891711.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109118209 + ... + 109128948.

It is an arithmetic number, because the mean of its divisors is an integer number (88390098990).

Almost surely, 2^{1171987233090} is an apocalyptic number.

1171987233090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1171987233090 is an abundant number, since it is smaller than the sum of its proper divisors (1656495934590).

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

1171987233090 is a wasteful number, since it uses less digits than its factorization.

1171987233090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218247346.

The product of its (nonzero) digits is 571536, while the sum is 51.

The spelling of 1171987233090 in words is "one trillion, one hundred seventy-one billion, nine hundred eighty-seven million, two hundred thirty-three thousand, ninety".