26161115243 has 16 divisors (see below), whose sum is σ = 26736261216. Its totient is φ = 25593062400.

The previous prime is 26161115237. The next prime is 26161115249. The reversal of 26161115243 is 34251116162.

It is an interprime number because it is at equal distance from previous prime (26161115237) and next prime (26161115249).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26161115243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26161115249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7179380 + ... + 7183022.

It is an arithmetic number, because the mean of its divisors is an integer number (1671016326).

Almost surely, 2^26161115243 is an apocalyptic number.

26161115243 is a deficient number, since it is larger than the sum of its proper divisors (575145973).

26161115243 is a wasteful number, since it uses less digits than its factorization.

26161115243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4574.

The product of its digits is 8640, while the sum is 32.

The spelling of 26161115243 in words is "twenty-six billion, one hundred sixty-one million, one hundred fifteen thousand, two hundred forty-three".