66158837287 has 8 divisors (see below), whose sum is σ = 70098770736. Its totient is φ = 62224263552.

The previous prime is 66158837249. The next prime is 66158837291. The reversal of 66158837287 is 78273885166.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66158837287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66158837207) 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, 1314493 + ... + 1363894.

It is an arithmetic number, because the mean of its divisors is an integer number (8762346342).

Almost surely, 2^66158837287 is an apocalyptic number.

66158837287 is a deficient number, since it is larger than the sum of its proper divisors (3939933449).

66158837287 is a wasteful number, since it uses less digits than its factorization.

66158837287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2679857.

The product of its digits is 27095040, while the sum is 61.

The spelling of 66158837287 in words is "sixty-six billion, one hundred fifty-eight million, eight hundred thirty-seven thousand, two hundred eighty-seven".