1156033391867 has 16 divisors (see below), whose sum is σ = 1199851307424. Its totient is φ = 1113032160000.

The previous prime is 1156033391839. The next prime is 1156033391869. The reversal of 1156033391867 is 7681933306511.

It is a cyclic number.

It is not a de Polignac number, because 1156033391867 - 2³⁰ = 1154959650043 is a prime.

It is a super-2 number, since 2×1156033391867² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1156033391869) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 816617 + ... + 1725957.

It is an arithmetic number, because the mean of its divisors is an integer number (74990706714).

Almost surely, 2^{1156033391867} is an apocalyptic number.

1156033391867 is a deficient number, since it is larger than the sum of its proper divisors (43817915557).

1156033391867 is a wasteful number, since it uses less digits than its factorization.

1156033391867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909790.

The product of its (nonzero) digits is 2449440, while the sum is 53.

The spelling of 1156033391867 in words is "one trillion, one hundred fifty-six billion, thirty-three million, three hundred ninety-one thousand, eight hundred sixty-seven".