53764856261 has 2 divisors, whose sum is σ = 53764856262. Its totient is φ = 53764856260.

The previous prime is 53764856239. The next prime is 53764856323. The reversal of 53764856261 is 16265846735.

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., 53608456225 + 156400036 = 231535^2 + 12506^2 .

It is a cyclic number.

It is not a de Polignac number, because 53764856261 - 2²² = 53760661957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53764852261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26882428130 + 26882428131.

It is an arithmetic number, because the mean of its divisors is an integer number (26882428131).

Almost surely, 2^53764856261 is an apocalyptic number.

It is an amenable number.

53764856261 is a deficient number, since it is larger than the sum of its proper divisors (1).

53764856261 is an equidigital number, since it uses as much as digits as its factorization.

53764856261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7257600, while the sum is 53.

The spelling of 53764856261 in words is "fifty-three billion, seven hundred sixty-four million, eight hundred fifty-six thousand, two hundred sixty-one".