66598005243 has 32 divisors (see below), whose sum is σ = 110840647680. Its totient is φ = 34555030560.

The previous prime is 66598005239. The next prime is 66598005259. The reversal of 66598005243 is 34250089566.

It is not a de Polignac number, because 66598005243 - 2² = 66598005239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66598005192 and 66598005201.

It is not an unprimeable number, because it can be changed into a prime (66598005203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21996 + ... + 365622.

It is an arithmetic number, because the mean of its divisors is an integer number (3463770240).

Almost surely, 2^66598005243 is an apocalyptic number.

66598005243 is a deficient number, since it is larger than the sum of its proper divisors (44242642437).

66598005243 is a wasteful number, since it uses less digits than its factorization.

66598005243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344487.

The product of its (nonzero) digits is 1555200, while the sum is 48.

The spelling of 66598005243 in words is "sixty-six billion, five hundred ninety-eight million, five thousand, two hundred forty-three".