7478008842138 has 8 divisors (see below), whose sum is σ = 14956017684288. Its totient is φ = 2492669614044.

The previous prime is 7478008842137. The next prime is 7478008842169. The reversal of 7478008842138 is 8312488008747.

It is a sphenic number, since it is the product of 3 distinct primes.

7478008842138 is an admirable number.

It is a super-2 number, since 2×7478008842138² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7478008842131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 623167403506 + ... + 623167403517.

It is an arithmetic number, because the mean of its divisors is an integer number (1869502210536).

Almost surely, 2^{7478008842138} is an apocalyptic number.

7478008842138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7478008842138 is a wasteful number, since it uses less digits than its factorization.

7478008842138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246334807028.

The product of its (nonzero) digits is 19267584, while the sum is 60.

The spelling of 7478008842138 in words is "seven trillion, four hundred seventy-eight billion, eight million, eight hundred forty-two thousand, one hundred thirty-eight".