55756163558 has 16 divisors (see below), whose sum is σ = 85219963920. Its totient is φ = 27349604256.

The previous prime is 55756163531. The next prime is 55756163579. The reversal of 55756163558 is 85536165755.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1831316 + ... + 1861512.

It is an arithmetic number, because the mean of its divisors is an integer number (5326247745).

Almost surely, 2^55756163558 is an apocalyptic number.

55756163558 is a deficient number, since it is larger than the sum of its proper divisors (29463800362).

55756163558 is a wasteful number, since it uses less digits than its factorization.

55756163558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47671.

The product of its digits is 18900000, while the sum is 56.

The spelling of 55756163558 in words is "fifty-five billion, seven hundred fifty-six million, one hundred sixty-three thousand, five hundred fifty-eight".