60721322813 has 2 divisors, whose sum is σ = 60721322814. Its totient is φ = 60721322812.

The previous prime is 60721322803. The next prime is 60721322869. The reversal of 60721322813 is 31822312706.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37070881444 + 23650441369 = 192538^2 + 153787^2 .

It is a cyclic number.

It is not a de Polignac number, because 60721322813 - 2⁴ = 60721322797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60721322803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30360661406 + 30360661407.

It is an arithmetic number, because the mean of its divisors is an integer number (30360661407).

Almost surely, 2^60721322813 is an apocalyptic number.

It is an amenable number.

60721322813 is a deficient number, since it is larger than the sum of its proper divisors (1).

60721322813 is an equidigital number, since it uses as much as digits as its factorization.

60721322813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 35.

The spelling of 60721322813 in words is "sixty billion, seven hundred twenty-one million, three hundred twenty-two thousand, eight hundred thirteen".