556021621254 has 128 divisors (see below), whose sum is σ = 1305541214208. Its totient is φ = 156175810560.

The previous prime is 556021621187. The next prime is 556021621291. The reversal of 556021621254 is 452126120655.

It is a congruent number.

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, 8256262 + ... + 8323334.

It is an arithmetic number, because the mean of its divisors is an integer number (10199540736).

Almost surely, 2^556021621254 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 556021621254, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (652770607104).

556021621254 is an abundant number, since it is smaller than the sum of its proper divisors (749519592954).

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

556021621254 is a wasteful number, since it uses less digits than its factorization.

556021621254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67282.

The product of its (nonzero) digits is 144000, while the sum is 39.

The spelling of 556021621254 in words is "five hundred fifty-six billion, twenty-one million, six hundred twenty-one thousand, two hundred fifty-four".