66041544500 has 48 divisors (see below), whose sum is σ = 150505834752. Its totient is φ = 25268064800.

The previous prime is 66041544469. The next prime is 66041544509. The reversal of 66041544500 is 544514066.

It is a super-2 number, since 2×66041544500² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66041544509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2859872 + ... + 2882871.

It is an arithmetic number, because the mean of its divisors is an integer number (3135538224).

Almost surely, 2^66041544500 is an apocalyptic number.

It is an amenable number.

66041544500 is an abundant number, since it is smaller than the sum of its proper divisors (84464290252).

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

66041544500 is a wasteful number, since it uses less digits than its factorization.

66041544500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5742785 (or 5742773 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 66041544500 in words is "sixty-six billion, forty-one million, five hundred forty-four thousand, five hundred".