42877663638 has 32 divisors (see below), whose sum is σ = 88327010304. Its totient is φ = 13866168672.

The previous prime is 42877663597. The next prime is 42877663669. The reversal of 42877663638 is 83636677824.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201270 + ... + 355337.

It is an arithmetic number, because the mean of its divisors is an integer number (2760219072).

Almost surely, 2^42877663638 is an apocalyptic number.

42877663638 is an abundant number, since it is smaller than the sum of its proper divisors (45449346666).

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

42877663638 is a wasteful number, since it uses less digits than its factorization.

42877663638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556996.

The product of its digits is 48771072, while the sum is 60.

The spelling of 42877663638 in words is "forty-two billion, eight hundred seventy-seven million, six hundred sixty-three thousand, six hundred thirty-eight".