67516372061 has 2 divisors, whose sum is σ = 67516372062. Its totient is φ = 67516372060.

The previous prime is 67516372039. The next prime is 67516372093. The reversal of 67516372061 is 16027361576.

67516372061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66819148036 + 697224025 = 258494^2 + 26405^2 .

It is a cyclic number.

It is not a de Polignac number, because 67516372061 - 2²² = 67512177757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67516362061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33758186030 + 33758186031.

It is an arithmetic number, because the mean of its divisors is an integer number (33758186031).

Almost surely, 2^67516372061 is an apocalyptic number.

It is an amenable number.

67516372061 is a deficient number, since it is larger than the sum of its proper divisors (1).

67516372061 is an equidigital number, since it uses as much as digits as its factorization.

67516372061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 317520, while the sum is 44.

The spelling of 67516372061 in words is "sixty-seven billion, five hundred sixteen million, three hundred seventy-two thousand, sixty-one".