1105650515561 has 2 divisors, whose sum is σ = 1105650515562. Its totient is φ = 1105650515560.

The previous prime is 1105650515537. The next prime is 1105650515587. The reversal of 1105650515561 is 1655150565011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1087390128400 + 18260387161 = 1042780^2 + 135131^2 .

It is a cyclic number.

It is not a de Polignac number, because 1105650515561 - 2²² = 1105646321257 is a prime.

It is not a weakly prime, because it can be changed into another prime (1105650515261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552825257780 + 552825257781.

It is an arithmetic number, because the mean of its divisors is an integer number (552825257781).

Almost surely, 2^{1105650515561} is an apocalyptic number.

It is an amenable number.

1105650515561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1105650515561 is an equidigital number, since it uses as much as digits as its factorization.

1105650515561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112500, while the sum is 41.

The spelling of 1105650515561 in words is "one trillion, one hundred five billion, six hundred fifty million, five hundred fifteen thousand, five hundred sixty-one".