66723523062347 has 16 divisors (see below), whose sum is σ = 67725498708000. Its totient is φ = 65729940401664.

The previous prime is 66723523062263. The next prime is 66723523062379. The reversal of 66723523062347 is 74326032532766.

It is a cyclic number.

It is not a de Polignac number, because 66723523062347 - 2⁴² = 62325476551243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66723523062292 and 66723523062301.

It is not an unprimeable number, because it can be changed into a prime (66723523062397) 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, 10116929 + ... + 15355757.

It is an arithmetic number, because the mean of its divisors is an integer number (4232843669250).

Almost surely, 2^{66723523062347} is an apocalyptic number.

66723523062347 is a deficient number, since it is larger than the sum of its proper divisors (1001975645653).

66723523062347 is a wasteful number, since it uses less digits than its factorization.

66723523062347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5239630.

The product of its (nonzero) digits is 45722880, while the sum is 56.

The spelling of 66723523062347 in words is "sixty-six trillion, seven hundred twenty-three billion, five hundred twenty-three million, sixty-two thousand, three hundred forty-seven".