1001841145866 has 96 divisors (see below), whose sum is σ = 2392422155136. Its totient is φ = 300458160000.

The previous prime is 1001841145829. The next prime is 1001841145871. The reversal of 1001841145866 is 6685411481001.

1001841145866 is a `hidden beast` number, since 1 + 0 + 0 + 18 + 41 + 14 + 586 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 55925451 + ... + 55943361.

It is an arithmetic number, because the mean of its divisors is an integer number (24921064116).

Almost surely, 2^{1001841145866} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1001841145866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1196211077568).

1001841145866 is an abundant number, since it is smaller than the sum of its proper divisors (1390581009270).

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

1001841145866 is a wasteful number, since it uses less digits than its factorization.

1001841145866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20828 (or 20825 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

The spelling of 1001841145866 in words is "one trillion, one billion, eight hundred forty-one million, one hundred forty-five thousand, eight hundred sixty-six".