66458658372 has 48 divisors (see below), whose sum is σ = 159418362432. Its totient is φ = 21532901760.

The previous prime is 66458658199. The next prime is 66458658373. The reversal of 66458658372 is 27385685466.

It is not an unprimeable number, because it can be changed into a prime (66458658373) 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, 380023 + ... + 526625.

It is an arithmetic number, because the mean of its divisors is an integer number (3321215884).

Almost surely, 2^66458658372 is an apocalyptic number.

It is an amenable number.

66458658372 is an abundant number, since it is smaller than the sum of its proper divisors (92959704060).

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

66458658372 is a wasteful number, since it uses less digits than its factorization.

66458658372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147668 (or 147666 counting only the distinct ones).

The product of its digits is 58060800, while the sum is 60.

The spelling of 66458658372 in words is "sixty-six billion, four hundred fifty-eight million, six hundred fifty-eight thousand, three hundred seventy-two".