263940272461 has 8 divisors (see below), whose sum is σ = 271558539000. Its totient is φ = 256378229760.

The previous prime is 263940272441. The next prime is 263940272467. The reversal of 263940272461 is 164272049362.

263940272461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 58464822025 + 205475450436 = 241795^2 + 453294^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 263940272461 - 2²⁹ = 263403401549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263940272467) 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 7 ways as a sum of consecutive naturals, for example, 14046436 + ... + 14065213.

It is an arithmetic number, because the mean of its divisors is an integer number (33944817375).

Almost surely, 2^263940272461 is an apocalyptic number.

It is an amenable number.

263940272461 is a deficient number, since it is larger than the sum of its proper divisors (7618266539).

263940272461 is a wasteful number, since it uses less digits than its factorization.

263940272461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28111919.

The product of its (nonzero) digits is 870912, while the sum is 46.

The spelling of 263940272461 in words is "two hundred sixty-three billion, nine hundred forty million, two hundred seventy-two thousand, four hundred sixty-one".