26136461513 has 4 divisors (see below), whose sum is σ = 26186627988. Its totient is φ = 26086295040.

The previous prime is 26136461471. The next prime is 26136461537. The reversal of 26136461513 is 31516463162.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3842388169 + 22294073344 = 61987^2 + 149312^2 .

It is a cyclic number.

It is not a de Polignac number, because 26136461513 - 2⁸ = 26136461257 is a prime.

It is a super-2 number, since 2×26136461513² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26136461543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25082456 + ... + 25083497.

It is an arithmetic number, because the mean of its divisors is an integer number (6546656997).

Almost surely, 2^26136461513 is an apocalyptic number.

It is an amenable number.

26136461513 is a deficient number, since it is larger than the sum of its proper divisors (50166475).

26136461513 is an equidigital number, since it uses as much as digits as its factorization.

26136461513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50166474.

The product of its digits is 77760, while the sum is 38.

The spelling of 26136461513 in words is "twenty-six billion, one hundred thirty-six million, four hundred sixty-one thousand, five hundred thirteen".