55878671017423 has 4 divisors (see below), whose sum is σ = 55878722975520. Its totient is φ = 55878619059328.

The previous prime is 55878671017417. The next prime is 55878671017457. The reversal of 55878671017423 is 32471017687855.

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 55878671017423 - 2²¹ = 55878668920271 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 (55878671015423) 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, 24331015 + ... + 26528392.

It is an arithmetic number, because the mean of its divisors is an integer number (13969680743880).

Almost surely, 2^{55878671017423} is an apocalyptic number.

55878671017423 is a deficient number, since it is larger than the sum of its proper divisors (51958097).

55878671017423 is a wasteful number, since it uses less digits than its factorization.

55878671017423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51958096.

The product of its (nonzero) digits is 79027200, while the sum is 64.

The spelling of 55878671017423 in words is "fifty-five trillion, eight hundred seventy-eight billion, six hundred seventy-one million, seventeen thousand, four hundred twenty-three".