10006661156550 has 24 divisors (see below), whose sum is σ = 24816519668616. Its totient is φ = 2668442975040.

The previous prime is 10006661156477. The next prime is 10006661156561. The reversal of 10006661156550 is 5565116660001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33355537039 + ... + 33355537338.

It is an arithmetic number, because the mean of its divisors is an integer number (1034021652859).

Almost surely, 2^{10006661156550} is an apocalyptic number.

10006661156550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10006661156550 is an abundant number, since it is smaller than the sum of its proper divisors (14809858512066).

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

10006661156550 is a wasteful number, since it uses less digits than its factorization.

10006661156550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66711074392 (or 66711074387 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 10006661156550 in words is "ten trillion, six billion, six hundred sixty-one million, one hundred fifty-six thousand, five hundred fifty".