263528785275 has 72 divisors (see below), whose sum is σ = 507087638064. Its totient is φ = 120410438400.

The previous prime is 263528785253. The next prime is 263528785307. The reversal of 263528785275 is 572587825362.

It is not a de Polignac number, because 263528785275 - 2⁷ = 263528785147 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7851429 + ... + 7884921.

It is an arithmetic number, because the mean of its divisors is an integer number (7042883862).

Almost surely, 2^263528785275 is an apocalyptic number.

263528785275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

263528785275 is a deficient number, since it is larger than the sum of its proper divisors (243558852789).

263528785275 is a wasteful number, since it uses less digits than its factorization.

263528785275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35661 (or 35649 counting only the distinct ones).

The product of its digits is 56448000, while the sum is 60.

The spelling of 263528785275 in words is "two hundred sixty-three billion, five hundred twenty-eight million, seven hundred eighty-five thousand, two hundred seventy-five".