66358854144 has 120 divisors (see below), whose sum is σ = 208926864432. Its totient is φ = 20108728320.

The previous prime is 66358854139. The next prime is 66358854173. The reversal of 66358854144 is 44145885366.

66358854144 is a `hidden beast` number, since 6 + 6 + 3 + 58 + 8 + 541 + 44 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 603894 + ... + 705269.

Almost surely, 2^66358854144 is an apocalyptic number.

66358854144 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

66358854144 is an abundant number, since it is smaller than the sum of its proper divisors (142568010288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66358854144 is a wasteful number, since it uses less digits than its factorization.

66358854144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309198 (or 1309179 counting only the distinct ones).

The product of its digits is 11059200, while the sum is 54.

The spelling of 66358854144 in words is "sixty-six billion, three hundred fifty-eight million, eight hundred fifty-four thousand, one hundred forty-four".