61723064237 has 2 divisors, whose sum is σ = 61723064238. Its totient is φ = 61723064236.

The previous prime is 61723064159. The next prime is 61723064267. The reversal of 61723064237 is 73246032716.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34001147236 + 27721917001 = 184394^2 + 166499^2 .

It is a cyclic number.

It is not a de Polignac number, because 61723064237 - 2¹⁴ = 61723047853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61723064194 and 61723064203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61723064267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30861532118 + 30861532119.

It is an arithmetic number, because the mean of its divisors is an integer number (30861532119).

Almost surely, 2^61723064237 is an apocalyptic number.

It is an amenable number.

61723064237 is a deficient number, since it is larger than the sum of its proper divisors (1).

61723064237 is an equidigital number, since it uses as much as digits as its factorization.

61723064237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 41.

The spelling of 61723064237 in words is "sixty-one billion, seven hundred twenty-three million, sixty-four thousand, two hundred thirty-seven".