263636055240 has 64 divisors (see below), whose sum is σ = 790943529600. Its totient is φ = 70299804672.

The previous prime is 263636055211. The next prime is 263636055247. The reversal of 263636055240 is 42550636362.

It is a junction number, because it is equal to n+sod(n) for n = 263636055192 and 263636055201.

It is not an unprimeable number, because it can be changed into a prime (263636055247) 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, 4100784 + ... + 4164576.

It is an arithmetic number, because the mean of its divisors is an integer number (12358492650).

Almost surely, 2^263636055240 is an apocalyptic number.

263636055240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

263636055240 is an abundant number, since it is smaller than the sum of its proper divisors (527307474360).

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

263636055240 is a wasteful number, since it uses less digits than its factorization.

263636055240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98246 (or 98242 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 42.

The spelling of 263636055240 in words is "two hundred sixty-three billion, six hundred thirty-six million, fifty-five thousand, two hundred forty".