61014653779 has 2 divisors, whose sum is σ = 61014653780. Its totient is φ = 61014653778.

The previous prime is 61014653741. The next prime is 61014653797. The reversal of 61014653779 is 97735641016.

Together with next prime (61014653797) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61014653779 is a prime.

It is not a weakly prime, because it can be changed into another prime (61014653729) 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, 30507326889 + 30507326890.

It is an arithmetic number, because the mean of its divisors is an integer number (30507326890).

Almost surely, 2^61014653779 is an apocalyptic number.

61014653779 is a deficient number, since it is larger than the sum of its proper divisors (1).

61014653779 is an equidigital number, since it uses as much as digits as its factorization.

61014653779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 952560, while the sum is 49.

The spelling of 61014653779 in words is "sixty-one billion, fourteen million, six hundred fifty-three thousand, seven hundred seventy-nine".