66127546744 has 64 divisors (see below), whose sum is σ = 148482201600. Its totient is φ = 26994637824.

The previous prime is 66127546729. The next prime is 66127546783. The reversal of 66127546744 is 44764572166.

It is a junction number, because it is equal to n+sod(n) for n = 66127546691 and 66127546700.

It is a congruent number.

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, 200424 + ... + 415240.

It is an arithmetic number, because the mean of its divisors is an integer number (2320034400).

Almost surely, 2^66127546744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66127546744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74241100800).

66127546744 is an abundant number, since it is smaller than the sum of its proper divisors (82354654856).

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

66127546744 is a wasteful number, since it uses less digits than its factorization.

66127546744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215092 (or 215088 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 52.

The spelling of 66127546744 in words is "sixty-six billion, one hundred twenty-seven million, five hundred forty-six thousand, seven hundred forty-four".