1164278027887 has 16 divisors (see below), whose sum is σ = 1298587530240. Its totient is φ = 1036447840512.

The previous prime is 1164278027863. The next prime is 1164278027897. The reversal of 1164278027887 is 7887208724611.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1164278027887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1164278027807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1478703 + ... + 2124880.

It is an arithmetic number, because the mean of its divisors is an integer number (81161720640).

Almost surely, 2^{1164278027887} is an apocalyptic number.

1164278027887 is a deficient number, since it is larger than the sum of its proper divisors (134309502353).

1164278027887 is a wasteful number, since it uses less digits than its factorization.

1164278027887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3604482.

The product of its (nonzero) digits is 16859136, while the sum is 61.

The spelling of 1164278027887 in words is "one trillion, one hundred sixty-four billion, two hundred seventy-eight million, twenty-seven thousand, eight hundred eighty-seven".