55683591647 has 4 divisors (see below), whose sum is σ = 58959097056. Its totient is φ = 52408086240.

The previous prime is 55683591617. The next prime is 55683591673. The reversal of 55683591647 is 74619538655.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74619538655 = 5 ⋅14923907731.

It is a cyclic number.

It is not a de Polignac number, because 55683591647 - 2¹⁸ = 55683329503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55683591617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1637752679 + ... + 1637752712.

It is an arithmetic number, because the mean of its divisors is an integer number (14739774264).

Almost surely, 2^55683591647 is an apocalyptic number.

55683591647 is a deficient number, since it is larger than the sum of its proper divisors (3275505409).

55683591647 is a wasteful number, since it uses less digits than its factorization.

55683591647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3275505408.

The product of its digits is 27216000, while the sum is 59.

The spelling of 55683591647 in words is "fifty-five billion, six hundred eighty-three million, five hundred ninety-one thousand, six hundred forty-seven".