263135245551240 has 128 divisors (see below), whose sum is σ = 790364375539200. Its totient is φ = 70084238192640.

The previous prime is 263135245551209. The next prime is 263135245551253. The reversal of 263135245551240 is 42155542531362.

It is a super-2 number, since 2×263135245551240² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 263135245551240.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 326518716 + ... + 327323604.

It is an arithmetic number, because the mean of its divisors is an integer number (6174721683900).

Almost surely, 2^{263135245551240} is an apocalyptic number.

263135245551240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

263135245551240 is an abundant number, since it is smaller than the sum of its proper divisors (527229129987960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

263135245551240 is a wasteful number, since it uses less digits than its factorization.

263135245551240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808207 (or 808203 counting only the distinct ones).

The product of its (nonzero) digits is 4320000, while the sum is 48.

The spelling of 263135245551240 in words is "two hundred sixty-three trillion, one hundred thirty-five billion, two hundred forty-five million, five hundred fifty-one thousand, two hundred forty".