263205676261 has 8 divisors (see below), whose sum is σ = 290359684800. Its totient is φ = 236589371040.

The previous prime is 263205676249. The next prime is 263205676273. The reversal of 263205676261 is 162676502362.

It is an interprime number because it is at equal distance from previous prime (263205676249) and next prime (263205676273).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 263205676261 - 2²³ = 263197287653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263205676241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134424801 + ... + 134426758.

It is an arithmetic number, because the mean of its divisors is an integer number (36294960600).

Almost surely, 2^263205676261 is an apocalyptic number.

It is an amenable number.

263205676261 is a deficient number, since it is larger than the sum of its proper divisors (27154008539).

263205676261 is a wasteful number, since it uses less digits than its factorization.

263205676261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268851659.

The product of its (nonzero) digits is 1088640, while the sum is 46.

The spelling of 263205676261 in words is "two hundred sixty-three billion, two hundred five million, six hundred seventy-six thousand, two hundred sixty-one".