71556220608 has 56 divisors (see below), whose sum is σ = 189616098288. Its totient is φ = 23815504896.

The previous prime is 71556220577. The next prime is 71556220609. The reversal of 71556220608 is 80602265517.

It is a self number, because there is not a number n which added to its sum of digits gives 71556220608.

It is not an unprimeable number, because it can be changed into a prime (71556220609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159991 + ... + 410742.

Almost surely, 2^71556220608 is an apocalyptic number.

It is an amenable number.

71556220608 is an abundant number, since it is smaller than the sum of its proper divisors (118059877680).

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

71556220608 is a wasteful number, since it uses less digits than its factorization.

71556220608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571401 (or 571391 counting only the distinct ones).

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

The spelling of 71556220608 in words is "seventy-one billion, five hundred fifty-six million, two hundred twenty thousand, six hundred eight".