58665613421 has 2 divisors, whose sum is σ = 58665613422. Its totient is φ = 58665613420.

The previous prime is 58665613417. The next prime is 58665613439. The reversal of 58665613421 is 12431656685.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31468986025 + 27196627396 = 177395^2 + 164914^2 .

It is a cyclic number.

It is not a de Polignac number, because 58665613421 - 2² = 58665613417 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (58665613471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29332806710 + 29332806711.

It is an arithmetic number, because the mean of its divisors is an integer number (29332806711).

Almost surely, 2^58665613421 is an apocalyptic number.

It is an amenable number.

58665613421 is a deficient number, since it is larger than the sum of its proper divisors (1).

58665613421 is an equidigital number, since it uses as much as digits as its factorization.

58665613421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1036800, while the sum is 47.

The spelling of 58665613421 in words is "fifty-eight billion, six hundred sixty-five million, six hundred thirteen thousand, four hundred twenty-one".