71421974338 has 64 divisors (see below), whose sum is σ = 126865243008. Its totient is φ = 29729157120.

The previous prime is 71421974333. The next prime is 71421974357. The reversal of 71421974338 is 83347912417.

It is a junction number, because it is equal to n+sod(n) for n = 71421974291 and 71421974300.

It is not an unprimeable number, because it can be changed into a prime (71421974333) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54645081 + ... + 54646387.

It is an arithmetic number, because the mean of its divisors is an integer number (1982269422).

Almost surely, 2^71421974338 is an apocalyptic number.

71421974338 is a deficient number, since it is larger than the sum of its proper divisors (55443268670).

71421974338 is a wasteful number, since it uses less digits than its factorization.

71421974338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2707.

The product of its digits is 1016064, while the sum is 49.

The spelling of 71421974338 in words is "seventy-one billion, four hundred twenty-one million, nine hundred seventy-four thousand, three hundred thirty-eight".