66349517492 has 24 divisors (see below), whose sum is σ = 122555879040. Its totient is φ = 31343068800.

The previous prime is 66349517477. The next prime is 66349517501. The reversal of 66349517492 is 29471594366.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1161509 + ... + 1217292.

It is an arithmetic number, because the mean of its divisors is an integer number (5106494960).

Almost surely, 2^66349517492 is an apocalyptic number.

It is an amenable number.

66349517492 is a deficient number, since it is larger than the sum of its proper divisors (56206361548).

66349517492 is a wasteful number, since it uses less digits than its factorization.

66349517492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2379191 (or 2379189 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 56.

The spelling of 66349517492 in words is "sixty-six billion, three hundred forty-nine million, five hundred seventeen thousand, four hundred ninety-two".