65421027196 has 36 divisors (see below), whose sum is σ = 137474613696. Its totient is φ = 27133142400.

The previous prime is 65421027187. The next prime is 65421027211. The reversal of 65421027196 is 69172012456.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 5377485 + ... + 5389636.

Almost surely, 2^65421027196 is an apocalyptic number.

It is an amenable number.

65421027196 is an abundant number, since it is smaller than the sum of its proper divisors (72053586500).

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

65421027196 is a wasteful number, since it uses less digits than its factorization.

65421027196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10767170 (or 10767161 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 65421027196 in words is "sixty-five billion, four hundred twenty-one million, twenty-seven thousand, one hundred ninety-six".