21768543098 has 8 divisors (see below), whose sum is σ = 32655610080. Its totient is φ = 10883339740.

The previous prime is 21768543023. The next prime is 21768543103. The reversal of 21768543098 is 89034586712.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 436328 + ... + 483651.

It is an arithmetic number, because the mean of its divisors is an integer number (4081951260).

It is a 1-persistent number, because it is pandigital, but 2⋅21768543098 = 43537086196 is not.

Almost surely, 2^21768543098 is an apocalyptic number.

21768543098 is a deficient number, since it is larger than the sum of its proper divisors (10887066982).

21768543098 is a wasteful number, since it uses less digits than its factorization.

21768543098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931812.

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 21768543098 in words is "twenty-one billion, seven hundred sixty-eight million, five hundred forty-three thousand, ninety-eight".