42738893478 has 48 divisors (see below), whose sum is σ = 94149356496. Its totient is φ = 14008230720.

The previous prime is 42738893459. The next prime is 42738893479. The reversal of 42738893478 is 87439883724.

42738893478 is a `hidden beast` number, since 4 + 2 + 73 + 8 + 8 + 93 + 478 = 666.

It is a super-2 number, since 2×42738893478² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42738893479) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6104676 + ... + 6111672.

It is an arithmetic number, because the mean of its divisors is an integer number (1961444927).

Almost surely, 2^42738893478 is an apocalyptic number.

42738893478 is an abundant number, since it is smaller than the sum of its proper divisors (51410463018).

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

42738893478 is a wasteful number, since it uses less digits than its factorization.

42738893478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12629 (or 12626 counting only the distinct ones).

The product of its digits is 65028096, while the sum is 63.

The spelling of 42738893478 in words is "forty-two billion, seven hundred thirty-eight million, eight hundred ninety-three thousand, four hundred seventy-eight".