47817666544 has 20 divisors (see below), whose sum is σ = 93915864496. Its totient is φ = 23581314432.

The previous prime is 47817666527. The next prime is 47817666577. The reversal of 47817666544 is 44566671874.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20468724 + ... + 20471059.

Almost surely, 2^47817666544 is an apocalyptic number.

It is an amenable number.

47817666544 is a deficient number, since it is larger than the sum of its proper divisors (46098197952).

47817666544 is a wasteful number, since it uses less digits than its factorization.

47817666544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40939864 (or 40939858 counting only the distinct ones).

The product of its digits is 27095040, while the sum is 58.

The spelling of 47817666544 in words is "forty-seven billion, eight hundred seventeen million, six hundred sixty-six thousand, five hundred forty-four".