26453748564 has 72 divisors (see below), whose sum is σ = 70424900000. Its totient is φ = 8349511104.

The previous prime is 26453748557. The next prime is 26453748571. The reversal of 26453748564 is 46584735462.

26453748564 is a `hidden beast` number, since 2 + 6 + 4 + 5 + 3 + 74 + 8 + 564 = 666.

It is an interprime number because it is at equal distance from previous prime (26453748557) and next prime (26453748571).

It is a self number, because there is not a number n which added to its sum of digits gives 26453748564.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1481562 + ... + 1499310.

Almost surely, 2^26453748564 is an apocalyptic number.

It is an amenable number.

26453748564 is an abundant number, since it is smaller than the sum of its proper divisors (43971151436).

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

26453748564 is a wasteful number, since it uses less digits than its factorization.

26453748564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19957 (or 19952 counting only the distinct ones).

The product of its digits is 19353600, while the sum is 54.

The spelling of 26453748564 in words is "twenty-six billion, four hundred fifty-three million, seven hundred forty-eight thousand, five hundred sixty-four".