1061055505155 has 32 divisors (see below), whose sum is σ = 1846135381824. Its totient is φ = 518213431296.

The previous prime is 1061055505129. The next prime is 1061055505157. The reversal of 1061055505155 is 5515055501601.

1061055505155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1061055505155 - 2¹⁷ = 1061055374083 is a prime.

It is a super-2 number, since 2×1061055505155² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1061055505157) 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, 56220322 + ... + 56239191.

It is an arithmetic number, because the mean of its divisors is an integer number (57691730682).

Almost surely, 2^{1061055505155} is an apocalyptic number.

1061055505155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1061055505155 is a deficient number, since it is larger than the sum of its proper divisors (785079876669).

1061055505155 is a wasteful number, since it uses less digits than its factorization.

1061055505155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112459575.

The product of its (nonzero) digits is 93750, while the sum is 39.

The spelling of 1061055505155 in words is "one trillion, sixty-one billion, fifty-five million, five hundred five thousand, one hundred fifty-five".