1108261617851 has 4 divisors (see below), whose sum is σ = 1108533721512. Its totient is φ = 1107989514192.

The previous prime is 1108261617833. The next prime is 1108261617877. The reversal of 1108261617851 is 1587161628011.

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-1108261617851 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1108261617796 and 1108261617805.

It is not an unprimeable number, because it can be changed into a prime (1108261617811) 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, 136045721 + ... + 136053866.

It is an arithmetic number, because the mean of its divisors is an integer number (277133430378).

Almost surely, 2^{1108261617851} is an apocalyptic number.

1108261617851 is a deficient number, since it is larger than the sum of its proper divisors (272103661).

1108261617851 is an equidigital number, since it uses as much as digits as its factorization.

1108261617851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272103660.

The product of its (nonzero) digits is 161280, while the sum is 47.

The spelling of 1108261617851 in words is "one trillion, one hundred eight billion, two hundred sixty-one million, six hundred seventeen thousand, eight hundred fifty-one".