21082698452 has 12 divisors (see below), whose sum is σ = 38836549920. Its totient is φ = 9986541336.

The previous prime is 21082698451. The next prime is 21082698473. The reversal of 21082698452 is 25489628012.

It is a junction number, because it is equal to n+sod(n) for n = 21082698397 and 21082698406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21082698451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138701888 + ... + 138702039.

It is an arithmetic number, because the mean of its divisors is an integer number (3236379160).

Almost surely, 2^21082698452 is an apocalyptic number.

It is an amenable number.

21082698452 is a deficient number, since it is larger than the sum of its proper divisors (17753851468).

21082698452 is a wasteful number, since it uses less digits than its factorization.

21082698452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277403950 (or 277403948 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 47.

The spelling of 21082698452 in words is "twenty-one billion, eighty-two million, six hundred ninety-eight thousand, four hundred fifty-two".