66343548501 has 16 divisors (see below), whose sum is σ = 101675937600. Its totient is φ = 42703892784.

The previous prime is 66343548493. The next prime is 66343548511. The reversal of 66343548501 is 10584534366.

66343548501 is a `hidden beast` number, since 6 + 63 + 43 + 5 + 48 + 501 = 666.

It is not a de Polignac number, because 66343548501 - 2³ = 66343548493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66343548511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42364191 + ... + 42365756.

It is an arithmetic number, because the mean of its divisors is an integer number (6354746100).

Almost surely, 2^66343548501 is an apocalyptic number.

It is an amenable number.

66343548501 is a deficient number, since it is larger than the sum of its proper divisors (35332389099).

66343548501 is a wasteful number, since it uses less digits than its factorization.

66343548501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84729985 (or 84729979 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 66343548501 in words is "sixty-six billion, three hundred forty-three million, five hundred forty-eight thousand, five hundred one".