61028037289 has 2 divisors, whose sum is σ = 61028037290. Its totient is φ = 61028037288.

The previous prime is 61028037251. The next prime is 61028037311. The reversal of 61028037289 is 98273082016.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60372421264 + 655616025 = 245708^2 + 25605^2 .

It is a cyclic number.

It is not a de Polignac number, because 61028037289 - 2⁹ = 61028036777 is a prime.

It is not a weakly prime, because it can be changed into another prime (61028031289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30514018644 + 30514018645.

It is an arithmetic number, because the mean of its divisors is an integer number (30514018645).

Almost surely, 2^61028037289 is an apocalyptic number.

It is an amenable number.

61028037289 is a deficient number, since it is larger than the sum of its proper divisors (1).

61028037289 is an equidigital number, since it uses as much as digits as its factorization.

61028037289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 46.

The spelling of 61028037289 in words is "sixty-one billion, twenty-eight million, thirty-seven thousand, two hundred eighty-nine".