21083354190 has 32 divisors (see below), whose sum is σ = 56222278560. Its totient is φ = 5622227712.

The previous prime is 21083354137. The next prime is 21083354203. The reversal of 21083354190 is 9145338012.

21083354190 is a `hidden beast` number, since 2 + 108 + 3 + 3 + 541 + 9 + 0 = 666.

It is a super-2 number, since 2×21083354190² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39042979 + ... + 39043518.

It is an arithmetic number, because the mean of its divisors is an integer number (1756946205).

Almost surely, 2^21083354190 is an apocalyptic number.

21083354190 is an abundant number, since it is smaller than the sum of its proper divisors (35138924370).

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

21083354190 is a wasteful number, since it uses less digits than its factorization.

21083354190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78086513 (or 78086507 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 21083354190 in words is "twenty-one billion, eighty-three million, three hundred fifty-four thousand, one hundred ninety".