61026734218139 has 2 divisors, whose sum is σ = 61026734218140. Its totient is φ = 61026734218138.

The previous prime is 61026734218129. The next prime is 61026734218217. The reversal of 61026734218139 is 93181243762016.

61026734218139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61026734218139 - 2¹⁶ = 61026734152603 is a prime.

It is not a weakly prime, because it can be changed into another prime (61026734218129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30513367109069 + 30513367109070.

It is an arithmetic number, because the mean of its divisors is an integer number (30513367109070).

Almost surely, 2^{61026734218139} is an apocalyptic number.

61026734218139 is a deficient number, since it is larger than the sum of its proper divisors (1).

61026734218139 is an equidigital number, since it uses as much as digits as its factorization.

61026734218139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 61026734218139 in words is "sixty-one trillion, twenty-six billion, seven hundred thirty-four million, two hundred eighteen thousand, one hundred thirty-nine".