10000386661000 has 256 divisors, whose sum is σ = 24171657120000. Its totient is φ = 3871013171200.

The previous prime is 10000386660877. The next prime is 10000386661033. The reversal of 10000386661000 is 16668300001.

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, 993377967 + ... + 993388033.

It is an arithmetic number, because the mean of its divisors is an integer number (94420535625).

Almost surely, 2^{10000386661000} is an apocalyptic number.

10000386661000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10000386661000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12085828560000).

10000386661000 is an abundant number, since it is smaller than the sum of its proper divisors (14171270459000).

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

10000386661000 is a wasteful number, since it uses less digits than its factorization.

10000386661000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10409 (or 10395 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 10000386661000 in words is "ten trillion, three hundred eighty-six million, six hundred sixty-one thousand".