61891760303 has 2 divisors, whose sum is σ = 61891760304. Its totient is φ = 61891760302.

The previous prime is 61891760291. The next prime is 61891760347. The reversal of 61891760303 is 30306719816.

It is an a-pointer prime, because the next prime (61891760347) can be obtained adding 61891760303 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61891760303 - 2¹⁴ = 61891743919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61891760353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30945880151 + 30945880152.

It is an arithmetic number, because the mean of its divisors is an integer number (30945880152).

Almost surely, 2^61891760303 is an apocalyptic number.

61891760303 is a deficient number, since it is larger than the sum of its proper divisors (1).

61891760303 is an equidigital number, since it uses as much as digits as its factorization.

61891760303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 44.

The spelling of 61891760303 in words is "sixty-one billion, eight hundred ninety-one million, seven hundred sixty thousand, three hundred three".