10666051511556 has 60 divisors (see below), whose sum is σ = 29033634950992. Its totient is φ = 3047443280784.

The previous prime is 10666051511543. The next prime is 10666051511573. The reversal of 10666051511556 is 65511515066601.

It is a super-2 number, since 2×10666051511556² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 185068570 + ... + 185126193.

Almost surely, 2^{10666051511556} is an apocalyptic number.

It is an amenable number.

10666051511556 is an abundant number, since it is smaller than the sum of its proper divisors (18367583439436).

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

10666051511556 is an equidigital number, since it uses as much as digits as its factorization.

10666051511556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370194798 (or 370194775 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 48.

The spelling of 10666051511556 in words is "ten trillion, six hundred sixty-six billion, fifty-one million, five hundred eleven thousand, five hundred fifty-six".