71866551140 has 48 divisors (see below), whose sum is σ = 163156526400. Its totient is φ = 26497590912.

The previous prime is 71866551101. The next prime is 71866551167. The reversal of 71866551140 is 4115566817.

It is a junction number, because it is equal to n+sod(n) for n = 71866551091 and 71866551100.

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 15 ways as a sum of consecutive naturals, for example, 2541650 + ... + 2569769.

It is an arithmetic number, because the mean of its divisors is an integer number (3399094300).

Almost surely, 2^71866551140 is an apocalyptic number.

It is an amenable number.

71866551140 is an abundant number, since it is smaller than the sum of its proper divisors (91289975260).

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

71866551140 is a wasteful number, since it uses less digits than its factorization.

71866551140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5111484 (or 5111482 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 44.

The spelling of 71866551140 in words is "seventy-one billion, eight hundred sixty-six million, five hundred fifty-one thousand, one hundred forty".