55664453507 has 4 divisors (see below), whose sum is σ = 59946334560. Its totient is φ = 51382572456.

The previous prime is 55664453483. The next prime is 55664453519. The reversal of 55664453507 is 70535446655.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55664453507 - 2²⁰ = 55663404931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55664453587) 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, 2140940507 + ... + 2140940532.

It is an arithmetic number, because the mean of its divisors is an integer number (14986583640).

Almost surely, 2^55664453507 is an apocalyptic number.

55664453507 is a deficient number, since it is larger than the sum of its proper divisors (4281881053).

55664453507 is a wasteful number, since it uses less digits than its factorization.

55664453507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4281881052.

The product of its (nonzero) digits is 7560000, while the sum is 50.

The spelling of 55664453507 in words is "fifty-five billion, six hundred sixty-four million, four hundred fifty-three thousand, five hundred seven".