64112158661 has 2 divisors, whose sum is σ = 64112158662. Its totient is φ = 64112158660.

The previous prime is 64112158613. The next prime is 64112158709. The reversal of 64112158661 is 16685121146.

It is a balanced prime because it is at equal distance from previous prime (64112158613) and next prime (64112158709).

It can be written as a sum of positive squares in only one way, i.e., 36699064900 + 27413093761 = 191570^2 + 165569^2 .

It is a cyclic number.

It is not a de Polignac number, because 64112158661 - 2¹⁴ = 64112142277 is a prime.

It is a super-2 number, since 2×64112158661² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64112158861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32056079330 + 32056079331.

It is an arithmetic number, because the mean of its divisors is an integer number (32056079331).

Almost surely, 2^64112158661 is an apocalyptic number.

It is an amenable number.

64112158661 is a deficient number, since it is larger than the sum of its proper divisors (1).

64112158661 is an equidigital number, since it uses as much as digits as its factorization.

64112158661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 41.

The spelling of 64112158661 in words is "sixty-four billion, one hundred twelve million, one hundred fifty-eight thousand, six hundred sixty-one".