26311400653644 has 18 divisors (see below), whose sum is σ = 66509373874580. Its totient is φ = 8770466884536.

The previous prime is 26311400653631. The next prime is 26311400653691. The reversal of 26311400653644 is 44635600411362.

26311400653644 is a `hidden beast` number, since 2 + 6 + 31 + 1 + 40 + 0 + 6 + 536 + 44 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 26311400653644.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 365436120154 + ... + 365436120225.

Almost surely, 2^{26311400653644} is an apocalyptic number.

It is an amenable number.

26311400653644 is an abundant number, since it is smaller than the sum of its proper divisors (40197973220936).

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

26311400653644 is a wasteful number, since it uses less digits than its factorization.

26311400653644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730872240389 (or 730872240384 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 45.

The spelling of 26311400653644 in words is "twenty-six trillion, three hundred eleven billion, four hundred million, six hundred fifty-three thousand, six hundred forty-four".