66309498938 has 8 divisors (see below), whose sum is σ = 100948789632. Its totient is φ = 32659902396.

The previous prime is 66309498923. The next prime is 66309499001. The reversal of 66309498938 is 83989490366.

66309498938 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247423370 + ... + 247423637.

It is an arithmetic number, because the mean of its divisors is an integer number (12618598704).

Almost surely, 2^66309498938 is an apocalyptic number.

66309498938 is a deficient number, since it is larger than the sum of its proper divisors (34639290694).

66309498938 is a wasteful number, since it uses less digits than its factorization.

66309498938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494847076.

The product of its (nonzero) digits is 60466176, while the sum is 65.

The spelling of 66309498938 in words is "sixty-six billion, three hundred nine million, four hundred ninety-eight thousand, nine hundred thirty-eight".