111367872013 has 2 divisors, whose sum is σ = 111367872014. Its totient is φ = 111367872012.

The previous prime is 111367871987. The next prime is 111367872017. The reversal of 111367872013 is 310278763111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111244262089 + 123609924 = 333533^2 + 11118^2 .

It is a cyclic number.

It is not a de Polignac number, because 111367872013 - 2²⁵ = 111334317581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111367872017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55683936006 + 55683936007.

It is an arithmetic number, because the mean of its divisors is an integer number (55683936007).

Almost surely, 2^111367872013 is an apocalyptic number.

It is an amenable number.

111367872013 is a deficient number, since it is larger than the sum of its proper divisors (1).

111367872013 is an equidigital number, since it uses as much as digits as its factorization.

111367872013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 40.

The spelling of 111367872013 in words is "one hundred eleven billion, three hundred sixty-seven million, eight hundred seventy-two thousand, thirteen".