71122670660 has 24 divisors (see below), whose sum is σ = 149712394776. Its totient is φ = 28381489920.

The previous prime is 71122670651. The next prime is 71122670677. The reversal of 71122670660 is 6607622117.

It can be written as a sum of positive squares in 4 ways, for example, as 3207183424 + 67915487236 = 56632^2 + 260606^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4215017 + ... + 4231856.

It is an arithmetic number, because the mean of its divisors is an integer number (6238016449).

Almost surely, 2^71122670660 is an apocalyptic number.

It is an amenable number.

71122670660 is an abundant number, since it is smaller than the sum of its proper divisors (78589724116).

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

71122670660 is a wasteful number, since it uses less digits than its factorization.

71122670660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8447303 (or 8447301 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The spelling of 71122670660 in words is "seventy-one billion, one hundred twenty-two million, six hundred seventy thousand, six hundred sixty".