261362056023 has 16 divisors (see below), whose sum is σ = 395441410560. Its totient is φ = 170534106648.

The previous prime is 261362055961. The next prime is 261362056027. The reversal of 261362056023 is 320650263162.

261362056023 is a `hidden beast` number, since 2 + 6 + 1 + 3 + 620 + 5 + 6 + 0 + 23 = 666.

It is not a de Polignac number, because 261362056023 - 2⁹ = 261362055511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261362056027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102978265 + ... + 102980802.

It is an arithmetic number, because the mean of its divisors is an integer number (24715088160).

Almost surely, 2^261362056023 is an apocalyptic number.

261362056023 is a deficient number, since it is larger than the sum of its proper divisors (134079354537).

261362056023 is a wasteful number, since it uses less digits than its factorization.

261362056023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205959123 (or 205959117 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The spelling of 261362056023 in words is "two hundred sixty-one billion, three hundred sixty-two million, fifty-six thousand, twenty-three".