61817333741 has 2 divisors, whose sum is σ = 61817333742. Its totient is φ = 61817333740.

The previous prime is 61817333731. The next prime is 61817333761. The reversal of 61817333741 is 14733371816.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43944317641 + 17873016100 = 209629^2 + 133690^2 .

It is a cyclic number.

It is not a de Polignac number, because 61817333741 - 2¹⁸ = 61817071597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61817333692 and 61817333701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61817333731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30908666870 + 30908666871.

It is an arithmetic number, because the mean of its divisors is an integer number (30908666871).

Almost surely, 2^61817333741 is an apocalyptic number.

It is an amenable number.

61817333741 is a deficient number, since it is larger than the sum of its proper divisors (1).

61817333741 is an equidigital number, since it uses as much as digits as its factorization.

61817333741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 44.

The spelling of 61817333741 in words is "sixty-one billion, eight hundred seventeen million, three hundred thirty-three thousand, seven hundred forty-one".