1166551050515 has 4 divisors (see below), whose sum is σ = 1399861260624. Its totient is φ = 933240840408.

The previous prime is 1166551050463. The next prime is 1166551050529. The reversal of 1166551050515 is 5150501556611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1166551050515 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116655105047 + ... + 116655105056.

It is an arithmetic number, because the mean of its divisors is an integer number (349965315156).

Almost surely, 2^{1166551050515} is an apocalyptic number.

1166551050515 is a deficient number, since it is larger than the sum of its proper divisors (233310210109).

1166551050515 is an equidigital number, since it uses as much as digits as its factorization.

1166551050515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233310210108.

The product of its (nonzero) digits is 112500, while the sum is 41.

The spelling of 1166551050515 in words is "one trillion, one hundred sixty-six billion, five hundred fifty-one million, fifty thousand, five hundred fifteen".