107181501661 has 24 divisors (see below), whose sum is σ = 117237120000. Its totient is φ = 97935469632.

The previous prime is 107181501659. The next prime is 107181501683. The reversal of 107181501661 is 166105181701.

It is not a de Polignac number, because 107181501661 - 2¹ = 107181501659 is a prime.

It is a super-2 number, since 2×107181501661² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 107181501661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107181501631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25768900 + ... + 25773058.

It is an arithmetic number, because the mean of its divisors is an integer number (4884880000).

Almost surely, 2^107181501661 is an apocalyptic number.

It is an amenable number.

107181501661 is a deficient number, since it is larger than the sum of its proper divisors (10055618339).

107181501661 is a wasteful number, since it uses less digits than its factorization.

107181501661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5693 (or 5680 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 37.

The spelling of 107181501661 in words is "one hundred seven billion, one hundred eighty-one million, five hundred one thousand, six hundred sixty-one".