6463662540 has 24 divisors (see below), whose sum is σ = 18098255280. Its totient is φ = 1723643328.

The previous prime is 6463662493. The next prime is 6463662563. The reversal of 6463662540 is 452663646.

It is a junction number, because it is equal to n+sod(n) for n = 6463662492 and 6463662501.

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, 53863795 + ... + 53863914.

It is an arithmetic number, because the mean of its divisors is an integer number (754093970).

Almost surely, 2^6463662540 is an apocalyptic number.

6463662540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6463662540 is an abundant number, since it is smaller than the sum of its proper divisors (11634592740).

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

6463662540 is a wasteful number, since it uses less digits than its factorization.

6463662540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107727721 (or 107727719 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 42.

The square root of 6463662540 is about 80396.9062837619. The cubic root of 6463662540 is about 1862.7713860057.

The spelling of 6463662540 in words is "six billion, four hundred sixty-three million, six hundred sixty-two thousand, five hundred forty".