1087556133765 has 8 divisors (see below), whose sum is σ = 1740089814048. Its totient is φ = 580029938000.

The previous prime is 1087556133751. The next prime is 1087556133787. The reversal of 1087556133765 is 5673316557801.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1087556133765 - 2¹² = 1087556129669 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36251871111 + ... + 36251871140.

It is an arithmetic number, because the mean of its divisors is an integer number (217511226756).

Almost surely, 2^{1087556133765} is an apocalyptic number.

1087556133765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1087556133765 is a deficient number, since it is larger than the sum of its proper divisors (652533680283).

1087556133765 is an equidigital number, since it uses as much as digits as its factorization.

1087556133765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72503742259.

The product of its (nonzero) digits is 15876000, while the sum is 57.

The spelling of 1087556133765 in words is "one trillion, eighty-seven billion, five hundred fifty-six million, one hundred thirty-three thousand, seven hundred sixty-five".