26440400140434 has 72 divisors (see below), whose sum is σ = 66641496709788. Its totient is φ = 7554298429440.

The previous prime is 26440400140421. The next prime is 26440400140493. The reversal of 26440400140434 is 43404100404462.

26440400140434 is a `hidden beast` number, since 2 + 6 + 4 + 40 + 40 + 0 + 140 + 434 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18201290092209 + 8239110048225 = 4266297^2 + 2870385^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 86566674 + ... + 86871570.

Almost surely, 2^{26440400140434} is an apocalyptic number.

26440400140434 is an abundant number, since it is smaller than the sum of its proper divisors (40201096569354).

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

26440400140434 is a wasteful number, since it uses less digits than its factorization.

26440400140434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403240 (or 403230 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 36.

Adding to 26440400140434 its reverse (43404100404462), we get a palindrome (69844500544896).

The spelling of 26440400140434 in words is "twenty-six trillion, four hundred forty billion, four hundred million, one hundred forty thousand, four hundred thirty-four".