65016066021 has 8 divisors (see below), whose sum is σ = 86689848960. Its totient is φ = 43343163552.

The previous prime is 65016066013. The next prime is 65016066023. The reversal of 65016066021 is 12066061056.

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

It is not a de Polignac number, because 65016066021 - 2³ = 65016066013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65016066023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22461 + ... + 361298.

It is an arithmetic number, because the mean of its divisors is an integer number (10836231120).

Almost surely, 2^65016066021 is an apocalyptic number.

It is an amenable number.

65016066021 is a deficient number, since it is larger than the sum of its proper divisors (21673782939).

65016066021 is a wasteful number, since it uses less digits than its factorization.

65016066021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440235.

The product of its (nonzero) digits is 12960, while the sum is 33.

The spelling of 65016066021 in words is "sixty-five billion, sixteen million, sixty-six thousand, twenty-one".