26385555555 has 24 divisors (see below), whose sum is σ = 45866791152. Its totient is φ = 14031733824.

The previous prime is 26385555509. The next prime is 26385555557. The reversal of 26385555555 is 55555558362.

26385555555 is a `hidden beast` number, since 2 + 6 + 3 + 85 + 5 + 5 + 5 + 555 = 666.

It is not a de Polignac number, because 26385555555 - 2¹² = 26385551459 is a prime.

26385555555 is a modest number, since divided by 555555 gives 26385 as remainder.

It is not an unprimeable number, because it can be changed into a prime (26385555557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 829264 + ... + 860493.

It is an arithmetic number, because the mean of its divisors is an integer number (1911116298).

Almost surely, 2^26385555555 is an apocalyptic number.

26385555555 is a deficient number, since it is larger than the sum of its proper divisors (19481235597).

26385555555 is a wasteful number, since it uses less digits than its factorization.

26385555555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1690115 (or 1690112 counting only the distinct ones).

The product of its digits is 22500000, while the sum is 54.

The spelling of 26385555555 in words is "twenty-six billion, three hundred eighty-five million, five hundred fifty-five thousand, five hundred fifty-five".