116666060665561 has 8 divisors (see below), whose sum is σ = 127289939046048. Its totient is φ = 106045161096000.

The previous prime is 116666060665559. The next prime is 116666060665577. The reversal of 116666060665561 is 165566060666611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 116666060665561 - 2¹ = 116666060665559 is a prime.

It is a super-2 number, since 2×116666060665561² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 116666060665561.

It is not an unprimeable number, because it can be changed into a prime (116666060665591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 744620835 + ... + 744777496.

It is an arithmetic number, because the mean of its divisors is an integer number (15911242380756).

Almost surely, 2^{116666060665561} is an apocalyptic number.

116666060665561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

116666060665561 is a deficient number, since it is larger than the sum of its proper divisors (10623878380487).

116666060665561 is a wasteful number, since it uses less digits than its factorization.

116666060665561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489405463.

The product of its (nonzero) digits is 41990400, while the sum is 61.

The spelling of 116666060665561 in words is "one hundred sixteen trillion, six hundred sixty-six billion, sixty million, six hundred sixty-five thousand, five hundred sixty-one".