55858561863 has 16 divisors (see below), whose sum is σ = 80353827456. Its totient is φ = 34311644640.

The previous prime is 55858561853. The next prime is 55858561897. The reversal of 55858561863 is 36816585855.

It is not a de Polignac number, because 55858561863 - 2¹⁶ = 55858496327 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55858561797 and 55858561806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55858561813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1287873 + ... + 1330538.

It is an arithmetic number, because the mean of its divisors is an integer number (5022114216).

Almost surely, 2^55858561863 is an apocalyptic number.

55858561863 is a deficient number, since it is larger than the sum of its proper divisors (24495265593).

55858561863 is a wasteful number, since it uses less digits than its factorization.

55858561863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2618974.

The product of its digits is 34560000, while the sum is 60.

The spelling of 55858561863 in words is "fifty-five billion, eight hundred fifty-eight million, five hundred sixty-one thousand, eight hundred sixty-three".