71994640424354 has 8 divisors (see below), whose sum is σ = 108135758189568. Its totient is φ = 35949387694500.

The previous prime is 71994640424353. The next prime is 71994640424417. The reversal of 71994640424354 is 45342404649917.

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

It is not an unprimeable number, because it can be changed into a prime (71994640424353) 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, 23966256962 + ... + 23966259965.

It is an arithmetic number, because the mean of its divisors is an integer number (13516969773696).

Almost surely, 2^{71994640424354} is an apocalyptic number.

71994640424354 is a deficient number, since it is larger than the sum of its proper divisors (36141117765214).

71994640424354 is a wasteful number, since it uses less digits than its factorization.

71994640424354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47932517680.

The product of its (nonzero) digits is 104509440, while the sum is 62.

The spelling of 71994640424354 in words is "seventy-one trillion, nine hundred ninety-four billion, six hundred forty million, four hundred twenty-four thousand, three hundred fifty-four".