116661420421 has 16 divisors (see below), whose sum is σ = 151140304000. Its totient is φ = 87445459008.

The previous prime is 116661420401. The next prime is 116661420451. The reversal of 116661420421 is 124024166611.

It is a cyclic number.

It is not a de Polignac number, because 116661420421 - 2⁵ = 116661420389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116661420401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33734946 + ... + 33738403.

It is an arithmetic number, because the mean of its divisors is an integer number (9446269000).

Almost surely, 2^116661420421 is an apocalyptic number.

It is an amenable number.

116661420421 is a deficient number, since it is larger than the sum of its proper divisors (34478883579).

116661420421 is a wasteful number, since it uses less digits than its factorization.

116661420421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67473388.

The product of its (nonzero) digits is 13824, while the sum is 34.

The spelling of 116661420421 in words is "one hundred sixteen billion, six hundred sixty-one million, four hundred twenty thousand, four hundred twenty-one".