56858226558 has 64 divisors (see below), whose sum is σ = 134537448960. Its totient is φ = 15674020992.

The previous prime is 56858226539. The next prime is 56858226559. The reversal of 56858226558 is 85562285865.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56858226559) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1802841 + ... + 1834107.

It is an arithmetic number, because the mean of its divisors is an integer number (2102147640).

Almost surely, 2^56858226558 is an apocalyptic number.

56858226558 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 56858226558, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67268724480).

56858226558 is an abundant number, since it is smaller than the sum of its proper divisors (77679222402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56858226558 is a wasteful number, since it uses less digits than its factorization.

56858226558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32801.

The product of its digits is 46080000, while the sum is 60.

The spelling of 56858226558 in words is "fifty-six billion, eight hundred fifty-eight million, two hundred twenty-six thousand, five hundred fifty-eight".