21080289052 has 6 divisors (see below), whose sum is σ = 36890505848. Its totient is φ = 10540144524.

The previous prime is 21080289019. The next prime is 21080289053. The reversal of 21080289052 is 25098208012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21080289053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2635036128 + ... + 2635036135.

Almost surely, 2^21080289052 is an apocalyptic number.

It is an amenable number.

21080289052 is a deficient number, since it is larger than the sum of its proper divisors (15810216796).

21080289052 is a wasteful number, since it uses less digits than its factorization.

21080289052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5270072267 (or 5270072265 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 37.

The spelling of 21080289052 in words is "twenty-one billion, eighty million, two hundred eighty-nine thousand, fifty-two".