1100050156561 has 8 divisors (see below), whose sum is σ = 1106559582464. Its totient is φ = 1093552956720.

The previous prime is 1100050156523. The next prime is 1100050156603. The reversal of 1100050156561 is 1656510500011.

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 1100050156561 - 2¹⁵ = 1100050123793 is a prime.

It is a super-2 number, since 2×1100050156561² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1100050156501) 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, 2876001 + ... + 3235966.

It is an arithmetic number, because the mean of its divisors is an integer number (138319947808).

Almost surely, 2^{1100050156561} is an apocalyptic number.

It is an amenable number.

1100050156561 is a deficient number, since it is larger than the sum of its proper divisors (6509425903).

1100050156561 is an equidigital number, since it uses as much as digits as its factorization.

1100050156561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6113031.

The product of its (nonzero) digits is 4500, while the sum is 31.

Adding to 1100050156561 its reverse (1656510500011), we get a palindrome (2756560656572).

The spelling of 1100050156561 in words is "one trillion, one hundred billion, fifty million, one hundred fifty-six thousand, five hundred sixty-one".