1166021116051 has 8 divisors (see below), whose sum is σ = 1272125841408. Its totient is φ = 1059933525000.

The previous prime is 1166021116031. The next prime is 1166021116087. The reversal of 1166021116051 is 1506111206611.

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

It is a cyclic number.

It is not a de Polignac number, because 1166021116051 - 2⁵ = 1166021116019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1166021116031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4141075 + ... + 4413676.

It is an arithmetic number, because the mean of its divisors is an integer number (159015730176).

Almost surely, 2^{1166021116051} is an apocalyptic number.

1166021116051 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1166021116051 is a deficient number, since it is larger than the sum of its proper divisors (106104725357).

1166021116051 is a wasteful number, since it uses less digits than its factorization.

1166021116051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8567153.

The product of its (nonzero) digits is 2160, while the sum is 31.

The spelling of 1166021116051 in words is "one trillion, one hundred sixty-six billion, twenty-one million, one hundred sixteen thousand, fifty-one".