1100550561061 has 4 divisors (see below), whose sum is σ = 1257772069792. Its totient is φ = 943329052332.

The previous prime is 1100550561043. The next prime is 1100550561067. The reversal of 1100550561061 is 1601650550011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1100550561061 - 2⁵ = 1100550561029 is a prime.

It is a super-2 number, since 2×1100550561061² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100550561067) 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, 78610754355 + ... + 78610754368.

It is an arithmetic number, because the mean of its divisors is an integer number (314443017448).

Almost surely, 2^{1100550561061} is an apocalyptic number.

It is an amenable number.

1100550561061 is a deficient number, since it is larger than the sum of its proper divisors (157221508731).

1100550561061 is an equidigital number, since it uses as much as digits as its factorization.

1100550561061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157221508730.

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

The spelling of 1100550561061 in words is "one trillion, one hundred billion, five hundred fifty million, five hundred sixty-one thousand, sixty-one".