65616202071 has 48 divisors (see below), whose sum is σ = 108963332608. Its totient is φ = 37272312000.

The previous prime is 65616202063. The next prime is 65616202087. The reversal of 65616202071 is 17020261656.

It is a happy number.

65616202071 is a `hidden beast` number, since 6 + 5 + 6 + 1 + 620 + 20 + 7 + 1 = 666.

It is not a de Polignac number, because 65616202071 - 2³ = 65616202063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65616202021) 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, 13250646 + ... + 13255596.

Almost surely, 2^65616202071 is an apocalyptic number.

65616202071 is a deficient number, since it is larger than the sum of its proper divisors (43347130537).

65616202071 is a wasteful number, since it uses less digits than its factorization.

65616202071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6172 (or 6169 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The spelling of 65616202071 in words is "sixty-five billion, six hundred sixteen million, two hundred two thousand, seventy-one".