1087656105505 has 8 divisors (see below), whose sum is σ = 1335540520512. Its totient is φ = 849889421808.

The previous prime is 1087656105491. The next prime is 1087656105517. The reversal of 1087656105505 is 5055016567801.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1087656105505 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2529432589 + ... + 2529433018.

It is an arithmetic number, because the mean of its divisors is an integer number (166942565064).

Almost surely, 2^{1087656105505} is an apocalyptic number.

It is an amenable number.

1087656105505 is a deficient number, since it is larger than the sum of its proper divisors (247884415007).

1087656105505 is an equidigital number, since it uses as much as digits as its factorization.

1087656105505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5058865655.

The product of its (nonzero) digits is 1260000, while the sum is 49.

The spelling of 1087656105505 in words is "one trillion, eighty-seven billion, six hundred fifty-six million, one hundred five thousand, five hundred five".