1115565600651 has 4 divisors (see below), whose sum is σ = 1487420800872. Its totient is φ = 743710400432.

The previous prime is 1115565600619. The next prime is 1115565600671. The reversal of 1115565600651 is 1560065655111.

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

It is a cyclic number.

It is not a de Polignac number, because 1115565600651 - 2⁵ = 1115565600619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1115565600671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185927600106 + ... + 185927600111.

It is an arithmetic number, because the mean of its divisors is an integer number (371855200218).

Almost surely, 2^{1115565600651} is an apocalyptic number.

1115565600651 is a deficient number, since it is larger than the sum of its proper divisors (371855200221).

1115565600651 is an equidigital number, since it uses as much as digits as its factorization.

1115565600651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371855200220.

The product of its (nonzero) digits is 135000, while the sum is 42.

The spelling of 1115565600651 in words is "one trillion, one hundred fifteen billion, five hundred sixty-five million, six hundred thousand, six hundred fifty-one".