61454546017 has 2 divisors, whose sum is σ = 61454546018. Its totient is φ = 61454546016.

The previous prime is 61454546003. The next prime is 61454546053. The reversal of 61454546017 is 71064545416.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58131138816 + 3323407201 = 241104^2 + 57649^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61454546017 is a prime.

It is a super-2 number, since 2×61454546017² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61454546317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30727273008 + 30727273009.

It is an arithmetic number, because the mean of its divisors is an integer number (30727273009).

Almost surely, 2^61454546017 is an apocalyptic number.

It is an amenable number.

61454546017 is a deficient number, since it is larger than the sum of its proper divisors (1).

61454546017 is an equidigital number, since it uses as much as digits as its factorization.

61454546017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 403200, while the sum is 43.

The spelling of 61454546017 in words is "sixty-one billion, four hundred fifty-four million, five hundred forty-six thousand, seventeen".