101406321661 has 16 divisors (see below), whose sum is σ = 106693171200. Its totient is φ = 96195301488.

The previous prime is 101406321659. The next prime is 101406321671. The reversal of 101406321661 is 166123604101.

It is a cyclic number.

It is not a de Polignac number, because 101406321661 - 2¹ = 101406321659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101406321671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1656130 + ... + 1716268.

It is an arithmetic number, because the mean of its divisors is an integer number (6668323200).

Almost surely, 2^101406321661 is an apocalyptic number.

It is an amenable number.

101406321661 is a deficient number, since it is larger than the sum of its proper divisors (5286849539).

101406321661 is a wasteful number, since it uses less digits than its factorization.

101406321661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60768.

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

Adding to 101406321661 its reverse (166123604101), we get a palindrome (267529925762).

The spelling of 101406321661 in words is "one hundred one billion, four hundred six million, three hundred twenty-one thousand, six hundred sixty-one".