6263386440 has 32 divisors (see below), whose sum is σ = 18790159680. Its totient is φ = 1670236352.

The previous prime is 6263386433. The next prime is 6263386453. The reversal of 6263386440 is 446833626.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6263386392 and 6263386401.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26097324 + ... + 26097563.

It is an arithmetic number, because the mean of its divisors is an integer number (587192490).

Almost surely, 2^6263386440 is an apocalyptic number.

6263386440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6263386440 is an abundant number, since it is smaller than the sum of its proper divisors (12526773240).

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

6263386440 is a wasteful number, since it uses less digits than its factorization.

6263386440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52194901 (or 52194897 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 42.

The square root of 6263386440 is about 79141.5594994185. The cubic root of 6263386440 is about 1843.3299066420.

The spelling of 6263386440 in words is "six billion, two hundred sixty-three million, three hundred eighty-six thousand, four hundred forty".