71654350218 has 16 divisors (see below), whose sum is σ = 156336764256. Its totient is φ = 21713439440.

The previous prime is 71654350217. The next prime is 71654350223. The reversal of 71654350218 is 81205345617.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 71654350218.

It is not an unprimeable number, because it can be changed into a prime (71654350217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 542835921 + ... + 542836052.

It is an arithmetic number, because the mean of its divisors is an integer number (9771047766).

Almost surely, 2^71654350218 is an apocalyptic number.

71654350218 is an abundant number, since it is smaller than the sum of its proper divisors (84682414038).

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

71654350218 is a wasteful number, since it uses less digits than its factorization.

71654350218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085671989.

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 71654350218 in words is "seventy-one billion, six hundred fifty-four million, three hundred fifty thousand, two hundred eighteen".