61301309747 has 2 divisors, whose sum is σ = 61301309748. Its totient is φ = 61301309746.

The previous prime is 61301309711. The next prime is 61301309753. The reversal of 61301309747 is 74790310316.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61301309747 - 2⁸ = 61301309491 is a prime.

It is not a weakly prime, because it can be changed into another prime (61301309767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30650654873 + 30650654874.

It is an arithmetic number, because the mean of its divisors is an integer number (30650654874).

Almost surely, 2^61301309747 is an apocalyptic number.

61301309747 is a deficient number, since it is larger than the sum of its proper divisors (1).

61301309747 is an equidigital number, since it uses as much as digits as its factorization.

61301309747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 41.

The spelling of 61301309747 in words is "sixty-one billion, three hundred one million, three hundred nine thousand, seven hundred forty-seven".