61601662223 has 2 divisors, whose sum is σ = 61601662224. Its totient is φ = 61601662222.

The previous prime is 61601662181. The next prime is 61601662229. The reversal of 61601662223 is 32226610616.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61601662223 - 2⁶ = 61601662159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61601662229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30800831111 + 30800831112.

It is an arithmetic number, because the mean of its divisors is an integer number (30800831112).

Almost surely, 2^61601662223 is an apocalyptic number.

61601662223 is a deficient number, since it is larger than the sum of its proper divisors (1).

61601662223 is an equidigital number, since it uses as much as digits as its factorization.

61601662223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 35.

The spelling of 61601662223 in words is "sixty-one billion, six hundred one million, six hundred sixty-two thousand, two hundred twenty-three".