54647216565 has 8 divisors (see below), whose sum is σ = 87435546528. Its totient is φ = 29145182160.

The previous prime is 54647216557. The next prime is 54647216573. The reversal of 54647216565 is 56561274645.

It is an interprime number because it is at equal distance from previous prime (54647216557) and next prime (54647216573).

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

It is not a de Polignac number, because 54647216565 - 2³ = 54647216557 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1821573871 + ... + 1821573900.

It is an arithmetic number, because the mean of its divisors is an integer number (10929443316).

Almost surely, 2^54647216565 is an apocalyptic number.

It is an amenable number.

54647216565 is a deficient number, since it is larger than the sum of its proper divisors (32788329963).

54647216565 is a wasteful number, since it uses less digits than its factorization.

54647216565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3643147779.

The product of its digits is 6048000, while the sum is 51.

The spelling of 54647216565 in words is "fifty-four billion, six hundred forty-seven million, two hundred sixteen thousand, five hundred sixty-five".