263126432747155 has 16 divisors (see below), whose sum is σ = 334430253027360. Its totient is φ = 198056560983552.

The previous prime is 263126432747153. The next prime is 263126432747179. The reversal of 263126432747155 is 551747234621362.

It is a cyclic number.

It is not a de Polignac number, because 263126432747155 - 2¹ = 263126432747153 is a prime.

It is a super-3 number, since 3×263126432747155³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 263126432747155.

It is not an unprimeable number, because it can be changed into a prime (263126432747153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 485390400 + ... + 485932189.

It is an arithmetic number, because the mean of its divisors is an integer number (20901890814210).

Almost surely, 2^{263126432747155} is an apocalyptic number.

263126432747155 is a deficient number, since it is larger than the sum of its proper divisors (71303820280205).

263126432747155 is a wasteful number, since it uses less digits than its factorization.

263126432747155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971325798.

The product of its digits is 50803200, while the sum is 58.

The spelling of 263126432747155 in words is "two hundred sixty-three trillion, one hundred twenty-six billion, four hundred thirty-two million, seven hundred forty-seven thousand, one hundred fifty-five".