4000555106556 has 48 divisors (see below), whose sum is σ = 10091490380160. Its totient is φ = 1229189048640.

The previous prime is 4000555106549. The next prime is 4000555106629. The reversal of 4000555106556 is 6556015550004.

It is a super-2 number, since 2×4000555106556² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 237103650 + ... + 237120521.

It is an arithmetic number, because the mean of its divisors is an integer number (210239382920).

Almost surely, 2^{4000555106556} is an apocalyptic number.

It is an amenable number.

4000555106556 is an abundant number, since it is smaller than the sum of its proper divisors (6090935273604).

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

4000555106556 is a wasteful number, since it uses less digits than its factorization.

4000555106556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474224234 (or 474224232 counting only the distinct ones).

The product of its (nonzero) digits is 450000, while the sum is 42.

The spelling of 4000555106556 in words is "four trillion, five hundred fifty-five million, one hundred six thousand, five hundred fifty-six".