1006551500556 has 24 divisors (see below), whose sum is σ = 2684137335040. Its totient is φ = 287586142992.

The previous prime is 1006551500543. The next prime is 1006551500597. The reversal of 1006551500556 is 6550051556001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5991377896 + ... + 5991378063.

Almost surely, 2^{1006551500556} is an apocalyptic number.

It is an amenable number.

1006551500556 is an abundant number, since it is smaller than the sum of its proper divisors (1677585834484).

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

1006551500556 is a wasteful number, since it uses less digits than its factorization.

1006551500556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11982755973 (or 11982755971 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 39.

The spelling of 1006551500556 in words is "one trillion, six billion, five hundred fifty-one million, five hundred thousand, five hundred fifty-six".