26815451644 has 6 divisors (see below), whose sum is σ = 46927040384. Its totient is φ = 13407725820.

The previous prime is 26815451591. The next prime is 26815451651. The reversal of 26815451644 is 44615451862.

It is a junction number, because it is equal to n+sod(n) for n = 26815451594 and 26815451603.

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, 3351931452 + ... + 3351931459.

Almost surely, 2^26815451644 is an apocalyptic number.

It is an amenable number.

26815451644 is a deficient number, since it is larger than the sum of its proper divisors (20111588740).

26815451644 is a wasteful number, since it uses less digits than its factorization.

26815451644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6703862915 (or 6703862913 counting only the distinct ones).

The product of its digits is 921600, while the sum is 46.

The spelling of 26815451644 in words is "twenty-six billion, eight hundred fifteen million, four hundred fifty-one thousand, six hundred forty-four".