26442661653 has 20 divisors (see below), whose sum is σ = 39869945280. Its totient is φ = 17463683592.

The previous prime is 26442661639. The next prime is 26442661667. The reversal of 26442661653 is 35616624462.

It is a happy number.

26442661653 is a `hidden beast` number, since 2 + 6 + 4 + 4 + 26 + 616 + 5 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (26442661639) and next prime (26442661667).

It is not a de Polignac number, because 26442661653 - 2⁵ = 26442661621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26442661599 and 26442661608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26442661603) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1516813 + ... + 1534146.

It is an arithmetic number, because the mean of its divisors is an integer number (1993497264).

Almost surely, 2^26442661653 is an apocalyptic number.

It is an amenable number.

26442661653 is a deficient number, since it is larger than the sum of its proper divisors (13427283627).

26442661653 is a wasteful number, since it uses less digits than its factorization.

26442661653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3051078 (or 3051069 counting only the distinct ones).

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

The spelling of 26442661653 in words is "twenty-six billion, four hundred forty-two million, six hundred sixty-one thousand, six hundred fifty-three".