1056105500155 has 4 divisors (see below), whose sum is σ = 1267326600192. Its totient is φ = 844884400120.

The previous prime is 1056105500147. The next prime is 1056105500183. The reversal of 1056105500155 is 5510055016501.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1056105500155 - 2³ = 1056105500147 is a prime.

It is a super-2 number, since 2×1056105500155² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1056105500155.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105610550011 + ... + 105610550020.

It is an arithmetic number, because the mean of its divisors is an integer number (316831650048).

Almost surely, 2^{1056105500155} is an apocalyptic number.

1056105500155 is a deficient number, since it is larger than the sum of its proper divisors (211221100037).

1056105500155 is an equidigital number, since it uses as much as digits as its factorization.

1056105500155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211221100036.

The product of its (nonzero) digits is 18750, while the sum is 34.

The spelling of 1056105500155 in words is "one trillion, fifty-six billion, one hundred five million, five hundred thousand, one hundred fifty-five".