71622445642 has 32 divisors (see below), whose sum is σ = 118990425600. Its totient is φ = 32058752880.

The previous prime is 71622445589. The next prime is 71622445649. The reversal of 71622445642 is 24654422617.

It is not an unprimeable number, because it can be changed into a prime (71622445649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5546109 + ... + 5559007.

It is an arithmetic number, because the mean of its divisors is an integer number (3718450800).

Almost surely, 2^71622445642 is an apocalyptic number.

71622445642 is a deficient number, since it is larger than the sum of its proper divisors (47367979958).

71622445642 is a wasteful number, since it uses less digits than its factorization.

71622445642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16746.

The product of its digits is 645120, while the sum is 43.

The spelling of 71622445642 in words is "seventy-one billion, six hundred twenty-two million, four hundred forty-five thousand, six hundred forty-two".