61730007727 has 2 divisors, whose sum is σ = 61730007728. Its totient is φ = 61730007726.

The previous prime is 61730007709. The next prime is 61730007767. The reversal of 61730007727 is 72770003716.

It is an a-pointer prime, because the next prime (61730007767) can be obtained adding 61730007727 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61730007727 - 2¹¹ = 61730005679 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61730007727.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61730007767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30865003863 + 30865003864.

It is an arithmetic number, because the mean of its divisors is an integer number (30865003864).

Almost surely, 2^61730007727 is an apocalyptic number.

61730007727 is a deficient number, since it is larger than the sum of its proper divisors (1).

61730007727 is an equidigital number, since it uses as much as digits as its factorization.

61730007727 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86436, while the sum is 40.

The spelling of 61730007727 in words is "sixty-one billion, seven hundred thirty million, seven thousand, seven hundred twenty-seven".