61075325537 has 2 divisors, whose sum is σ = 61075325538. Its totient is φ = 61075325536.

The previous prime is 61075325527. The next prime is 61075325539. The reversal of 61075325537 is 73552357016.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59809104481 + 1266221056 = 244559^2 + 35584^2 .

It is a cyclic number.

It is not a de Polignac number, because 61075325537 - 2¹² = 61075321441 is a prime.

Together with 61075325539, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61075325539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30537662768 + 30537662769.

It is an arithmetic number, because the mean of its divisors is an integer number (30537662769).

Almost surely, 2^61075325537 is an apocalyptic number.

It is an amenable number.

61075325537 is a deficient number, since it is larger than the sum of its proper divisors (1).

61075325537 is an equidigital number, since it uses as much as digits as its factorization.

61075325537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 661500, while the sum is 44.

The spelling of 61075325537 in words is "sixty-one billion, seventy-five million, three hundred twenty-five thousand, five hundred thirty-seven".