556554140521554 has 128 divisors (see below), whose sum is σ = 1326802166784000. Its totient is φ = 155535295668480.

The previous prime is 556554140521531. The next prime is 556554140521591. The reversal of 556554140521554 is 455125041455655.

It is a super-2 number, since 2×556554140521554² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 556554140521494 and 556554140521503.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1399914 + ... + 33392634.

It is an arithmetic number, because the mean of its divisors is an integer number (10365641928000).

Almost surely, 2^{556554140521554} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 556554140521554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (663401083392000).

556554140521554 is an abundant number, since it is smaller than the sum of its proper divisors (770248026262446).

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

556554140521554 is a wasteful number, since it uses less digits than its factorization.

556554140521554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31992933 (or 31992919 counting only the distinct ones).

The product of its (nonzero) digits is 60000000, while the sum is 57.

The spelling of 556554140521554 in words is "five hundred fifty-six trillion, five hundred fifty-four billion, one hundred forty million, five hundred twenty-one thousand, five hundred fifty-four".