55147323687 has 8 divisors (see below), whose sum is σ = 73531011840. Its totient is φ = 36764259000.

The previous prime is 55147323683. The next prime is 55147323697. The reversal of 55147323687 is 78632374155.

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

It is not a de Polignac number, because 55147323687 - 2² = 55147323683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55147323683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120562 + ... + 353312.

It is an arithmetic number, because the mean of its divisors is an integer number (9191376480).

Almost surely, 2^55147323687 is an apocalyptic number.

55147323687 is a deficient number, since it is larger than the sum of its proper divisors (18383688153).

55147323687 is a wasteful number, since it uses less digits than its factorization.

55147323687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311733.

The product of its digits is 4233600, while the sum is 51.

The spelling of 55147323687 in words is "fifty-five billion, one hundred forty-seven million, three hundred twenty-three thousand, six hundred eighty-seven".