26135223644 has 24 divisors (see below), whose sum is σ = 46343404800. Its totient is φ = 12895366640.

The previous prime is 26135223643. The next prime is 26135223671. The reversal of 26135223644 is 44632253162.

It is a junction number, because it is equal to n+sod(n) for n = 26135223598 and 26135223607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26135223643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45524 + ... + 233115.

It is an arithmetic number, because the mean of its divisors is an integer number (1930975200).

Almost surely, 2^26135223644 is an apocalyptic number.

It is an amenable number.

26135223644 is a deficient number, since it is larger than the sum of its proper divisors (20208181156).

26135223644 is a wasteful number, since it uses less digits than its factorization.

26135223644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278953 (or 278951 counting only the distinct ones).

The product of its digits is 207360, while the sum is 38.

The spelling of 26135223644 in words is "twenty-six billion, one hundred thirty-five million, two hundred twenty-three thousand, six hundred forty-four".