1116661005651 has 8 divisors (see below), whose sum is σ = 1540222076880. Its totient is φ = 718770302432.

The previous prime is 1116661005643. The next prime is 1116661005689. The reversal of 1116661005651 is 1565001666111.

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 1116661005651 - 2³ = 1116661005643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1116661005611) 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, 6417591900 + ... + 6417592073.

It is an arithmetic number, because the mean of its divisors is an integer number (192527759610).

Almost surely, 2^{1116661005651} is an apocalyptic number.

1116661005651 is a deficient number, since it is larger than the sum of its proper divisors (423561071229).

1116661005651 is a wasteful number, since it uses less digits than its factorization.

1116661005651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12835184005.

The product of its (nonzero) digits is 32400, while the sum is 39.

The spelling of 1116661005651 in words is "one trillion, one hundred sixteen billion, six hundred sixty-one million, five thousand, six hundred fifty-one".