111615101615461 has 2 divisors, whose sum is σ = 111615101615462. Its totient is φ = 111615101615460.

The previous prime is 111615101615357. The next prime is 111615101615579. The reversal of 111615101615461 is 164516101516111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111424280292900 + 190821322561 = 10555770^2 + 436831^2 .

It is a cyclic number.

It is not a de Polignac number, because 111615101615461 - 2²⁷ = 111614967397733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111615101615761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55807550807730 + 55807550807731.

It is an arithmetic number, because the mean of its divisors is an integer number (55807550807731).

Almost surely, 2^{111615101615461} is an apocalyptic number.

It is an amenable number.

111615101615461 is a deficient number, since it is larger than the sum of its proper divisors (1).

111615101615461 is an equidigital number, since it uses as much as digits as its factorization.

111615101615461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 40.

The spelling of 111615101615461 in words is "one hundred eleven trillion, six hundred fifteen billion, one hundred one million, six hundred fifteen thousand, four hundred sixty-one".