66640700483 has 8 divisors (see below), whose sum is σ = 76180275552. Its totient is φ = 57105994176.

The previous prime is 66640700459. The next prime is 66640700501. The reversal of 66640700483 is 38400704666.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66640700483 - 2⁶ = 66640700419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66640700443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1187810 + ... + 1242647.

It is an arithmetic number, because the mean of its divisors is an integer number (9522534444).

Almost surely, 2^66640700483 is an apocalyptic number.

66640700483 is a deficient number, since it is larger than the sum of its proper divisors (9539575069).

66640700483 is a wasteful number, since it uses less digits than its factorization.

66640700483 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2434381.

The product of its (nonzero) digits is 580608, while the sum is 44.

The spelling of 66640700483 in words is "sixty-six billion, six hundred forty million, seven hundred thousand, four hundred eighty-three".