6455877689638 has 12 divisors (see below), whose sum is σ = 10486026188748. Its totient is φ = 2979635856600.

The previous prime is 6455877689627. The next prime is 6455877689731. The reversal of 6455877689638 is 8369867785546.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9550114588 + ... + 9550115263.

It is an arithmetic number, because the mean of its divisors is an integer number (873835515729).

Almost surely, 2^{6455877689638} is an apocalyptic number.

6455877689638 is a deficient number, since it is larger than the sum of its proper divisors (4030148499110).

6455877689638 is a wasteful number, since it uses less digits than its factorization.

6455877689638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19100229879 (or 19100229866 counting only the distinct ones).

The product of its digits is 14631321600, while the sum is 82.

The spelling of 6455877689638 in words is "six trillion, four hundred fifty-five billion, eight hundred seventy-seven million, six hundred eighty-nine thousand, six hundred thirty-eight".