66271197860 has 48 divisors (see below), whose sum is σ = 160118380800. Its totient is φ = 22569052800.

The previous prime is 66271197859. The next prime is 66271197901. The reversal of 66271197860 is 6879117266.

66271197860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×66271197860³ (a number of 33 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1567616 + ... + 1609335.

It is an arithmetic number, because the mean of its divisors is an integer number (3335799600).

Almost surely, 2^66271197860 is an apocalyptic number.

It is an amenable number.

66271197860 is an abundant number, since it is smaller than the sum of its proper divisors (93847182940).

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

66271197860 is a wasteful number, since it uses less digits than its factorization.

66271197860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3177116 (or 3177114 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 53.

The spelling of 66271197860 in words is "sixty-six billion, two hundred seventy-one million, one hundred ninety-seven thousand, eight hundred sixty".