66892987357 has 16 divisors (see below), whose sum is σ = 78495588864. Its totient is φ = 55808496000.

The previous prime is 66892987351. The next prime is 66892987379. The reversal of 66892987357 is 75378929866.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66892987357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66892987351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146694 + ... + 394087.

It is an arithmetic number, because the mean of its divisors is an integer number (4905974304).

Almost surely, 2^66892987357 is an apocalyptic number.

It is an amenable number.

66892987357 is a deficient number, since it is larger than the sum of its proper divisors (11602601507).

66892987357 is a wasteful number, since it uses less digits than its factorization.

66892987357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541260.

The product of its digits is 274337280, while the sum is 70.

The spelling of 66892987357 in words is "sixty-six billion, eight hundred ninety-two million, nine hundred eighty-seven thousand, three hundred fifty-seven".