66471123477 has 16 divisors (see below), whose sum is σ = 101773969920. Its totient is φ = 38165238000.

The previous prime is 66471123463. The next prime is 66471123493. The reversal of 66471123477 is 77432117466.

It is not a de Polignac number, because 66471123477 - 2⁴ = 66471123461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66471123457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53006649 + ... + 53007902.

It is an arithmetic number, because the mean of its divisors is an integer number (6360873120).

Almost surely, 2^66471123477 is an apocalyptic number.

It is an amenable number.

66471123477 is a deficient number, since it is larger than the sum of its proper divisors (35302846443).

66471123477 is a wasteful number, since it uses less digits than its factorization.

66471123477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106014584.

The product of its digits is 1185408, while the sum is 48.

The spelling of 66471123477 in words is "sixty-six billion, four hundred seventy-one million, one hundred twenty-three thousand, four hundred seventy-seven".