65016654021 has 48 divisors (see below), whose sum is σ = 111836874240. Its totient is φ = 37330107120.

The previous prime is 65016654019. The next prime is 65016654083. The reversal of 65016654021 is 12045661056.

65016654021 is a `hidden beast` number, since 6 + 50 + 1 + 66 + 540 + 2 + 1 = 666.

65016654021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 65016654021 - 2¹ = 65016654019 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65016652021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 589305 + ... + 690878.

It is an arithmetic number, because the mean of its divisors is an integer number (2329934880).

Almost surely, 2^65016654021 is an apocalyptic number.

It is an amenable number.

65016654021 is a deficient number, since it is larger than the sum of its proper divisors (46820220219).

65016654021 is a wasteful number, since it uses less digits than its factorization.

65016654021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280228 (or 1280216 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 65016654021 in words is "sixty-five billion, sixteen million, six hundred fifty-four thousand, twenty-one".