66468436737 has 8 divisors (see below), whose sum is σ = 89692348704. Its totient is φ = 43778407968.

The previous prime is 66468436733. The next prime is 66468436753. The reversal of 66468436737 is 73763486466.

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 66468436737 - 2² = 66468436733 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66468436733) 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, 133470508 + ... + 133471005.

It is an arithmetic number, because the mean of its divisors is an integer number (11211543588).

Almost surely, 2^66468436737 is an apocalyptic number.

It is an amenable number.

66468436737 is a deficient number, since it is larger than the sum of its proper divisors (23223911967).

66468436737 is a wasteful number, since it uses less digits than its factorization.

66468436737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266941599.

The product of its digits is 73156608, while the sum is 60.

The spelling of 66468436737 in words is "sixty-six billion, four hundred sixty-eight million, four hundred thirty-six thousand, seven hundred thirty-seven".