66318414985587 has 8 divisors (see below), whose sum is σ = 89120809639936. Its totient is φ = 43864148494152.

The previous prime is 66318414985567. The next prime is 66318414985591. The reversal of 66318414985587 is 78558941481366.

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 66318414985587 - 2⁸ = 66318414985331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66318414985507) 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, 87032040283 + ... + 87032041044.

It is an arithmetic number, because the mean of its divisors is an integer number (11140101204992).

Almost surely, 2^{66318414985587} is an apocalyptic number.

66318414985587 is a deficient number, since it is larger than the sum of its proper divisors (22802394654349).

66318414985587 is a wasteful number, since it uses less digits than its factorization.

66318414985587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174064081457.

The product of its digits is 1393459200, while the sum is 75.

The spelling of 66318414985587 in words is "sixty-six trillion, three hundred eighteen billion, four hundred fourteen million, nine hundred eighty-five thousand, five hundred eighty-seven".