26361340434 has 128 divisors (see below), whose sum is σ = 68946796800. Its totient is φ = 7360450560.

The previous prime is 26361340427. The next prime is 26361340477. The reversal of 26361340434 is 43404316362.

26361340434 is a `hidden beast` number, since 2 + 6 + 3 + 613 + 4 + 0 + 4 + 34 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4730802 + ... + 4736370.

It is an arithmetic number, because the mean of its divisors is an integer number (538646850).

Almost surely, 2^26361340434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26361340434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34473398400).

26361340434 is an abundant number, since it is smaller than the sum of its proper divisors (42585456366).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26361340434 is a wasteful number, since it uses less digits than its factorization.

26361340434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6217 (or 6211 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 36.

Adding to 26361340434 its reverse (43404316362), we get a palindrome (69765656796).

The spelling of 26361340434 in words is "twenty-six billion, three hundred sixty-one million, three hundred forty thousand, four hundred thirty-four".