111620236513 has 8 divisors (see below), whose sum is σ = 117433025640. Its totient is φ = 105954606720.

The previous prime is 111620236499. The next prime is 111620236571. The reversal of 111620236513 is 315632026111.

It can be written as a sum of positive squares in 4 ways, for example, as 45019079329 + 66601157184 = 212177^2 + 258072^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111620236513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111620036513) 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, 36788278 + ... + 36791311.

It is an arithmetic number, because the mean of its divisors is an integer number (14679128205).

Almost surely, 2^111620236513 is an apocalyptic number.

It is an amenable number.

111620236513 is a deficient number, since it is larger than the sum of its proper divisors (5812789127).

111620236513 is an equidigital number, since it uses as much as digits as its factorization.

111620236513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73579667.

The product of its (nonzero) digits is 6480, while the sum is 31.

The spelling of 111620236513 in words is "one hundred eleven billion, six hundred twenty million, two hundred thirty-six thousand, five hundred thirteen".