10545561548505 has 24 divisors (see below), whose sum is σ = 18281954258568. Its totient is φ = 5623382290176.

The previous prime is 10545561548443. The next prime is 10545561548527. The reversal of 10545561548505 is 50584516554501.

10545561548505 is a `hidden beast` number, since 1 + 0 + 5 + 4 + 556 + 1 + 5 + 4 + 85 + 0 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2795289735744 + 7750271812761 = 1671912^2 + 2783931^2 .

It is not a de Polignac number, because 10545561548505 - 2²¹ = 10545559451353 is a prime.

It is a super-2 number, since 2×10545561548505² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18829332 + ... + 19381301.

It is an arithmetic number, because the mean of its divisors is an integer number (761748094107).

Almost surely, 2^{10545561548505} is an apocalyptic number.

10545561548505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10545561548505 is a deficient number, since it is larger than the sum of its proper divisors (7736392710063).

10545561548505 is a wasteful number, since it uses less digits than its factorization.

10545561548505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38216777 (or 38216774 counting only the distinct ones).

The product of its (nonzero) digits is 12000000, while the sum is 54.

The spelling of 10545561548505 in words is "ten trillion, five hundred forty-five billion, five hundred sixty-one million, five hundred forty-eight thousand, five hundred five".