26540262641656 has 8 divisors (see below), whose sum is σ = 49762992453120. Its totient is φ = 13270131320824.

The previous prime is 26540262641597. The next prime is 26540262641689. The reversal of 26540262641656 is 65614626204562.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×26540262641656² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26540262641597 and 26540262641606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1658766415096 + ... + 1658766415111.

It is an arithmetic number, because the mean of its divisors is an integer number (6220374056640).

Almost surely, 2^{26540262641656} is an apocalyptic number.

It is an amenable number.

26540262641656 is a deficient number, since it is larger than the sum of its proper divisors (23222729811464).

26540262641656 is a wasteful number, since it uses less digits than its factorization.

26540262641656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3317532830213 (or 3317532830209 counting only the distinct ones).

The product of its (nonzero) digits is 24883200, while the sum is 55.

The spelling of 26540262641656 in words is "twenty-six trillion, five hundred forty billion, two hundred sixty-two million, six hundred forty-one thousand, six hundred fifty-six".