5556437406 has 128 divisors (see below), whose sum is σ = 14040768000. Its totient is φ = 1614670848.

The previous prime is 5556437401. The next prime is 5556437441. The reversal of 5556437406 is 6047346555.

5556437406 is a `hidden beast` number, since 55 + 564 + 37 + 4 + 0 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5556437401) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8255886 + ... + 8256558.

It is an arithmetic number, because the mean of its divisors is an integer number (109693500).

Almost surely, 2^5556437406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5556437406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7020384000).

5556437406 is an abundant number, since it is smaller than the sum of its proper divisors (8484330594).

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

5556437406 is a wasteful number, since it uses less digits than its factorization.

5556437406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335 (or 1329 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 45.

The square root of 5556437406 is about 74541.5146478793. The cubic root of 5556437406 is about 1771.1913209396.

The spelling of 5556437406 in words is "five billion, five hundred fifty-six million, four hundred thirty-seven thousand, four hundred six".