42438378670 has 16 divisors (see below), whose sum is σ = 76725601488. Its totient is φ = 16900569280.

The previous prime is 42438378623. The next prime is 42438378673. The reversal of 42438378670 is 7687383424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42438378673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9345391 + ... + 9349930.

It is an arithmetic number, because the mean of its divisors is an integer number (4795350093).

Almost surely, 2^42438378670 is an apocalyptic number.

42438378670 is a deficient number, since it is larger than the sum of its proper divisors (34287222818).

42438378670 is a wasteful number, since it uses less digits than its factorization.

42438378670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18695555.

The product of its (nonzero) digits is 5419008, while the sum is 52.

The spelling of 42438378670 in words is "forty-two billion, four hundred thirty-eight million, three hundred seventy-eight thousand, six hundred seventy".