26443668672 has 56 divisors (see below), whose sum is σ = 77739494000. Its totient is φ = 8814555648.

The previous prime is 26443668661. The next prime is 26443668683. The reversal of 26443668672 is 27686634462.

26443668672 is a `hidden beast` number, since 2 + 64 + 436 + 6 + 86 + 72 = 666.

It is an interprime number because it is at equal distance from previous prime (26443668661) and next prime (26443668683).

It is a super-2 number, since 2×26443668672² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7649797 + ... + 7653252.

It is an arithmetic number, because the mean of its divisors is an integer number (1388205250).

Almost surely, 2^26443668672 is an apocalyptic number.

It is an amenable number.

26443668672 is an abundant number, since it is smaller than the sum of its proper divisors (51295825328).

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

26443668672 is a wasteful number, since it uses less digits than its factorization.

26443668672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15303070 (or 15303054 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 54.

The spelling of 26443668672 in words is "twenty-six billion, four hundred forty-three million, six hundred sixty-eight thousand, six hundred seventy-two".