1156660210651 has 4 divisors (see below), whose sum is σ = 1261811138904. Its totient is φ = 1051509282400.

The previous prime is 1156660210637. The next prime is 1156660210663. The reversal of 1156660210651 is 1560120666511.

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 1156660210651 - 2⁵ = 1156660210619 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1156670210651) 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, 52575464110 + ... + 52575464131.

It is an arithmetic number, because the mean of its divisors is an integer number (315452784726).

Almost surely, 2^{1156660210651} is an apocalyptic number.

1156660210651 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1156660210651 is a deficient number, since it is larger than the sum of its proper divisors (105150928253).

1156660210651 is a wasteful number, since it uses less digits than its factorization.

1156660210651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105150928252.

The product of its (nonzero) digits is 64800, while the sum is 40.

The spelling of 1156660210651 in words is "one trillion, one hundred fifty-six billion, six hundred sixty million, two hundred ten thousand, six hundred fifty-one".