66723762760 has 64 divisors (see below), whose sum is σ = 153543962880. Its totient is φ = 26086145280.

The previous prime is 66723762739. The next prime is 66723762799. The reversal of 66723762760 is 6726732766.

It is a junction number, because it is equal to n+sod(n) for n = 66723762698 and 66723762707.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 497725 + ... + 617395.

It is an arithmetic number, because the mean of its divisors is an integer number (2399124420).

Almost surely, 2^66723762760 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66723762760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76771981440).

66723762760 is an abundant number, since it is smaller than the sum of its proper divisors (86820200120).

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

66723762760 is a wasteful number, since it uses less digits than its factorization.

66723762760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119998 (or 119994 counting only the distinct ones).

The product of its (nonzero) digits is 5334336, while the sum is 52.

The spelling of 66723762760 in words is "sixty-six billion, seven hundred twenty-three million, seven hundred sixty-two thousand, seven hundred sixty".