74871068139 has 48 divisors (see below), whose sum is σ = 126848659392. Its totient is φ = 41669581824.

The previous prime is 74871068137. The next prime is 74871068189. The reversal of 74871068139 is 93186017847.

It is not a de Polignac number, because 74871068139 - 2¹ = 74871068137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74871068137) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 375607 + ... + 539279.

It is an arithmetic number, because the mean of its divisors is an integer number (2642680404).

Almost surely, 2^74871068139 is an apocalyptic number.

74871068139 is a deficient number, since it is larger than the sum of its proper divisors (51977591253).

74871068139 is a wasteful number, since it uses less digits than its factorization.

74871068139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163876 (or 163873 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The spelling of 74871068139 in words is "seventy-four billion, eight hundred seventy-one million, sixty-eight thousand, one hundred thirty-nine".