66122704749 has 16 divisors (see below), whose sum is σ = 88261632000. Its totient is φ = 44032825200.

The previous prime is 66122704729. The next prime is 66122704751. The reversal of 66122704749 is 94740722166.

It is not a de Polignac number, because 66122704749 - 2⁷ = 66122704621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66122704698 and 66122704707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66122704709) 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, 17551264 + ... + 17555030.

It is an arithmetic number, because the mean of its divisors is an integer number (5516352000).

Almost surely, 2^66122704749 is an apocalyptic number.

It is an amenable number.

66122704749 is a deficient number, since it is larger than the sum of its proper divisors (22138927251).

66122704749 is a wasteful number, since it uses less digits than its factorization.

66122704749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8720.

The product of its (nonzero) digits is 1016064, while the sum is 48.

The spelling of 66122704749 in words is "sixty-six billion, one hundred twenty-two million, seven hundred four thousand, seven hundred forty-nine".