4505742765261 has 6 divisors (see below), whose sum is σ = 6508295105390. Its totient is φ = 3003828510168.

The previous prime is 4505742765233. The next prime is 4505742765269. The reversal of 4505742765261 is 1625672475054.

4505742765261 is a `hidden beast` number, since 4 + 5 + 0 + 5 + 7 + 42 + 76 + 526 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4346536977225 + 159205788036 = 2084835^2 + 399006^2 .

It is not a de Polignac number, because 4505742765261 - 2⁵ = 4505742765229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4505742765198 and 4505742765207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4505742765269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 250319042506 + ... + 250319042523.

Almost surely, 2^{4505742765261} is an apocalyptic number.

It is an amenable number.

4505742765261 is a deficient number, since it is larger than the sum of its proper divisors (2002552340129).

4505742765261 is a wasteful number, since it uses less digits than its factorization.

4505742765261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500638085035 (or 500638085032 counting only the distinct ones).

The product of its (nonzero) digits is 14112000, while the sum is 54.

The spelling of 4505742765261 in words is "four trillion, five hundred five billion, seven hundred forty-two million, seven hundred sixty-five thousand, two hundred sixty-one".