1087199920560 has 160 divisors (see below), whose sum is σ = 3637962030528. Its totient is φ = 267000053760.

The previous prime is 1087199920529. The next prime is 1087199920577. The reversal of 1087199920560 is 650299917801.

It is a self number, because there is not a number n which added to its sum of digits gives 1087199920560.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 948580 + ... + 1753340.

Almost surely, 2^{1087199920560} is an apocalyptic number.

1087199920560 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 1087199920560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1818981015264).

1087199920560 is an abundant number, since it is smaller than the sum of its proper divisors (2550762109968).

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

1087199920560 is a wasteful number, since it uses less digits than its factorization.

1087199920560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805223 (or 805217 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 57.

The spelling of 1087199920560 in words is "one trillion, eighty-seven billion, one hundred ninety-nine million, nine hundred twenty thousand, five hundred sixty".