66372541528 has 8 divisors (see below), whose sum is σ = 124448515380. Its totient is φ = 33186270760.

The previous prime is 66372541523. The next prime is 66372541531. The reversal of 66372541528 is 82514527366.

66372541528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66372541523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4148283838 + ... + 4148283853.

Almost surely, 2^66372541528 is an apocalyptic number.

It is an amenable number.

66372541528 is a deficient number, since it is larger than the sum of its proper divisors (58075973852).

66372541528 is a wasteful number, since it uses less digits than its factorization.

66372541528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8296567697 (or 8296567693 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 49.

The spelling of 66372541528 in words is "sixty-six billion, three hundred seventy-two million, five hundred forty-one thousand, five hundred twenty-eight".