116445561 has 8 divisors (see below), whose sum is σ = 155326464. Its totient is φ = 77597520.

The previous prime is 116445551. The next prime is 116445569. The reversal of 116445561 is 165544611.

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

It is not a de Polignac number, because 116445561 - 2²⁶ = 49336697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (116445569) 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, 1800 + ... + 15366.

It is an arithmetic number, because the mean of its divisors is an integer number (19415808).

Almost surely, 2^116445561 is an apocalyptic number.

It is an amenable number.

116445561 is a deficient number, since it is larger than the sum of its proper divisors (38880903).

116445561 is a wasteful number, since it uses less digits than its factorization.

116445561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16431.

The product of its digits is 14400, while the sum is 33.

The square root of 116445561 is about 10790.9944398095. The cubic root of 116445561 is about 488.3235237682.

It can be divided in two parts, 11644 and 5561, that added together give a triangular number (17205 = T₁₈₅).

The spelling of 116445561 in words is "one hundred sixteen million, four hundred forty-five thousand, five hundred sixty-one".