65002021356 has 24 divisors (see below), whose sum is σ = 155770610800. Its totient is φ = 21081736512.

The previous prime is 65002021313. The next prime is 65002021379. The reversal of 65002021356 is 65312020056.

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 7 ways as a sum of consecutive naturals, for example, 73200031 + ... + 73200918.

Almost surely, 2^65002021356 is an apocalyptic number.

It is an amenable number.

65002021356 is an abundant number, since it is smaller than the sum of its proper divisors (90768589444).

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

65002021356 is a wasteful number, since it uses less digits than its factorization.

65002021356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146400993 (or 146400991 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The spelling of 65002021356 in words is "sixty-five billion, two million, twenty-one thousand, three hundred fifty-six".