1061061005505 has 32 divisors (see below), whose sum is σ = 1798434399744. Its totient is φ = 532352577536.

The previous prime is 1061061005497. The next prime is 1061061005507. The reversal of 1061061005505 is 5055001601601.

It is a cyclic number.

It is not a de Polignac number, because 1061061005505 - 2³ = 1061061005497 is a prime.

It is a super-2 number, since 2×1061061005505² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1061061005507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 482424 + ... + 1534553.

It is an arithmetic number, because the mean of its divisors is an integer number (56201074992).

Almost surely, 2^{1061061005505} is an apocalyptic number.

1061061005505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1061061005505 is a deficient number, since it is larger than the sum of its proper divisors (737373394239).

1061061005505 is a wasteful number, since it uses less digits than its factorization.

1061061005505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2019065.

The product of its (nonzero) digits is 4500, while the sum is 30.

The spelling of 1061061005505 in words is "one trillion, sixty-one billion, sixty-one million, five thousand, five hundred five".