1161263206587 has 16 divisors (see below), whose sum is σ = 1689177738240. Its totient is φ = 703767708000.

The previous prime is 1161263206487. The next prime is 1161263206591. The reversal of 1161263206587 is 7856023621611.

It is not a de Polignac number, because 1161263206587 - 2²⁶ = 1161196097723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1161263206087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147837 + ... + 1531137.

It is an arithmetic number, because the mean of its divisors is an integer number (105573608640).

Almost surely, 2^{1161263206587} is an apocalyptic number.

1161263206587 is a deficient number, since it is larger than the sum of its proper divisors (527914531653).

1161263206587 is a wasteful number, since it uses less digits than its factorization.

1161263206587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408754.

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 1161263206587 in words is "one trillion, one hundred sixty-one billion, two hundred sixty-three million, two hundred six thousand, five hundred eighty-seven".