61613773289461 has 2 divisors, whose sum is σ = 61613773289462. Its totient is φ = 61613773289460.

The previous prime is 61613773289449. The next prime is 61613773289483. The reversal of 61613773289461 is 16498237731616.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35318476414225 + 26295296875236 = 5942935^2 + 5127894^2 .

It is a cyclic number.

It is not a de Polignac number, because 61613773289461 - 2⁷ = 61613773289333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61613773289393 and 61613773289402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61613773281461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30806886644730 + 30806886644731.

It is an arithmetic number, because the mean of its divisors is an integer number (30806886644731).

Almost surely, 2^{61613773289461} is an apocalyptic number.

It is an amenable number.

61613773289461 is a deficient number, since it is larger than the sum of its proper divisors (1).

61613773289461 is an equidigital number, since it uses as much as digits as its factorization.

61613773289461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54867456, while the sum is 64.

The spelling of 61613773289461 in words is "sixty-one trillion, six hundred thirteen billion, seven hundred seventy-three million, two hundred eighty-nine thousand, four hundred sixty-one".