61504204132457 has 2 divisors, whose sum is σ = 61504204132458. Its totient is φ = 61504204132456.

The previous prime is 61504204132373. The next prime is 61504204132541. The reversal of 61504204132457 is 75423140240516.

It is a balanced prime because it is at equal distance from previous prime (61504204132373) and next prime (61504204132541).

It can be written as a sum of positive squares in only one way, i.e., 46535809184656 + 14968394947801 = 6821716^2 + 3868901^2 .

It is a cyclic number.

It is not a de Polignac number, because 61504204132457 - 2³² = 61499909165161 is a prime.

It is not a weakly prime, because it can be changed into another prime (61504204132957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30752102066228 + 30752102066229.

It is an arithmetic number, because the mean of its divisors is an integer number (30752102066229).

Almost surely, 2^{61504204132457} is an apocalyptic number.

It is an amenable number.

61504204132457 is a deficient number, since it is larger than the sum of its proper divisors (1).

61504204132457 is an equidigital number, since it uses as much as digits as its factorization.

61504204132457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 806400, while the sum is 44.

The spelling of 61504204132457 in words is "sixty-one trillion, five hundred four billion, two hundred four million, one hundred thirty-two thousand, four hundred fifty-seven".