21310190813484 has 36 divisors (see below), whose sum is σ = 53948920676560. Its totient is φ = 7092650489760.

The previous prime is 21310190813473. The next prime is 21310190813489. The reversal of 21310190813484 is 48431809101312.

21310190813484 is a `hidden beast` number, since 2 + 1 + 3 + 1 + 0 + 1 + 90 + 81 + 3 + 484 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (21310190813489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 447744544 + ... + 447792135.

Almost surely, 2^{21310190813484} is an apocalyptic number.

It is an amenable number.

21310190813484 is an abundant number, since it is smaller than the sum of its proper divisors (32638729863076).

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

21310190813484 is a wasteful number, since it uses less digits than its factorization.

21310190813484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895537350 (or 895537345 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

Adding to 21310190813484 its reverse (48431809101312), we get a palindrome (69741999914796).

The spelling of 21310190813484 in words is "twenty-one trillion, three hundred ten billion, one hundred ninety million, eight hundred thirteen thousand, four hundred eighty-four".