55323568155637 has 4 divisors (see below), whose sum is σ = 57108199386496. Its totient is φ = 53538936924780.

The previous prime is 55323568155631. The next prime is 55323568155649. The reversal of 55323568155637 is 73655186532355.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55323568155637 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 (55323568155631) 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, 892315615383 + ... + 892315615444.

It is an arithmetic number, because the mean of its divisors is an integer number (14277049846624).

Almost surely, 2^{55323568155637} is an apocalyptic number.

It is an amenable number.

55323568155637 is a deficient number, since it is larger than the sum of its proper divisors (1784631230859).

55323568155637 is a wasteful number, since it uses less digits than its factorization.

55323568155637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784631230858.

The product of its digits is 340200000, while the sum is 64.

The spelling of 55323568155637 in words is "fifty-five trillion, three hundred twenty-three billion, five hundred sixty-eight million, one hundred fifty-five thousand, six hundred thirty-seven".