10001661331002 has 32 divisors (see below), whose sum is σ = 21871065761280. Its totient is φ = 3023964905520.

The previous prime is 10001661330961. The next prime is 10001661331027. The reversal of 10001661331002 is 20013316610001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171009502 + ... + 171067977.

It is an arithmetic number, because the mean of its divisors is an integer number (683470805040).

Almost surely, 2^{10001661331002} is an apocalyptic number.

10001661331002 is an abundant number, since it is smaller than the sum of its proper divisors (11869404430278).

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

10001661331002 is a wasteful number, since it uses less digits than its factorization.

10001661331002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342077938.

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 10001661331002 its reverse (20013316610001), we get a palindrome (30014977941003).

The spelling of 10001661331002 in words is "ten trillion, one billion, six hundred sixty-one million, three hundred thirty-one thousand, two".