66101930747 has 16 divisors (see below), whose sum is σ = 69885944640. Its totient is φ = 62396505600.

The previous prime is 66101930723. The next prime is 66101930789. The reversal of 66101930747 is 74703910166.

It is a cyclic number.

It is not a de Polignac number, because 66101930747 - 2⁶ = 66101930683 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66101930698 and 66101930707.

It is not an unprimeable number, because it can be changed into a prime (66101930707) 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, 1035497 + ... + 1097477.

It is an arithmetic number, because the mean of its divisors is an integer number (4367871540).

Almost surely, 2^66101930747 is an apocalyptic number.

66101930747 is a deficient number, since it is larger than the sum of its proper divisors (3784013893).

66101930747 is a wasteful number, since it uses less digits than its factorization.

66101930747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62614.

The product of its (nonzero) digits is 190512, while the sum is 44.

The spelling of 66101930747 in words is "sixty-six billion, one hundred one million, nine hundred thirty thousand, seven hundred forty-seven".