21460775288 has 8 divisors (see below), whose sum is σ = 40238953680. Its totient is φ = 10730387640.

The previous prime is 21460775269. The next prime is 21460775353. The reversal of 21460775288 is 88257706412.

It is a tau number, because it is divible by the number of its divisors (8).

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, 1341298448 + ... + 1341298463.

It is an arithmetic number, because the mean of its divisors is an integer number (5029869210).

Almost surely, 2^21460775288 is an apocalyptic number.

It is an amenable number.

21460775288 is a deficient number, since it is larger than the sum of its proper divisors (18778178392).

21460775288 is a wasteful number, since it uses less digits than its factorization.

21460775288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2682596917 (or 2682596913 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 50.

The spelling of 21460775288 in words is "twenty-one billion, four hundred sixty million, seven hundred seventy-five thousand, two hundred eighty-eight".