56105056105505 has 16 divisors (see below), whose sum is σ = 74173813155648. Its totient is φ = 40399680360000.

The previous prime is 56105056105481. The next prime is 56105056105547. The reversal of 56105056105505 is 50550165050165.

It is not a de Polignac number, because 56105056105505 - 2²⁰ = 56105055056929 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5049954491 + ... + 5049965600.

It is an arithmetic number, because the mean of its divisors is an integer number (4635863322228).

Almost surely, 2^{56105056105505} is an apocalyptic number.

56105056105505 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56105056105505 is a deficient number, since it is larger than the sum of its proper divisors (18068757050143).

56105056105505 is a wasteful number, since it uses less digits than its factorization.

56105056105505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10099920208.

The product of its (nonzero) digits is 562500, while the sum is 44.

The spelling of 56105056105505 in words is "fifty-six trillion, one hundred five billion, fifty-six million, one hundred five thousand, five hundred five".