21116499930430 has 32 divisors (see below), whose sum is σ = 38028983731200. Its totient is φ = 8442315696672.

The previous prime is 21116499930419. The next prime is 21116499930431. The reversal of 21116499930430 is 3403999461112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21116499930431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176767261 + ... + 176886679.

It is an arithmetic number, because the mean of its divisors is an integer number (1188405741600).

Almost surely, 2^{21116499930430} is an apocalyptic number.

21116499930430 is a deficient number, since it is larger than the sum of its proper divisors (16912483800770).

21116499930430 is a wasteful number, since it uses less digits than its factorization.

21116499930430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128248.

The product of its (nonzero) digits is 1259712, while the sum is 52.

The spelling of 21116499930430 in words is "twenty-one trillion, one hundred sixteen billion, four hundred ninety-nine million, nine hundred thirty thousand, four hundred thirty".