42863905638 has 24 divisors (see below), whose sum is σ = 98334843048. Its totient is φ = 13447499712.

The previous prime is 42863905573. The next prime is 42863905639. The reversal of 42863905638 is 83650936824.

42863905638 is a `hidden beast` number, since 42 + 8 + 6 + 39 + 0 + 563 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42863905639) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70038756 + ... + 70039367.

It is an arithmetic number, because the mean of its divisors is an integer number (4097285127).

Almost surely, 2^42863905638 is an apocalyptic number.

42863905638 is an abundant number, since it is smaller than the sum of its proper divisors (55470937410).

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

42863905638 is a wasteful number, since it uses less digits than its factorization.

42863905638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140078148 (or 140078145 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 54.

The spelling of 42863905638 in words is "forty-two billion, eight hundred sixty-three million, nine hundred five thousand, six hundred thirty-eight".