53156522565109 has 2 divisors, whose sum is σ = 53156522565110. Its totient is φ = 53156522565108.

The previous prime is 53156522565011. The next prime is 53156522565229. The reversal of 53156522565109 is 90156522565135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49903585677009 + 3252936888100 = 7064247^2 + 1803590^2 .

It is a cyclic number.

It is not a de Polignac number, because 53156522565109 - 2²¹ = 53156520467957 is a prime.

It is a super-2 number, since 2×53156522565109² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 53156522565109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53156522595109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26578261282554 + 26578261282555.

It is an arithmetic number, because the mean of its divisors is an integer number (26578261282555).

Almost surely, 2^{53156522565109} is an apocalyptic number.

It is an amenable number.

53156522565109 is a deficient number, since it is larger than the sum of its proper divisors (1).

53156522565109 is an equidigital number, since it uses as much as digits as its factorization.

53156522565109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12150000, while the sum is 55.

The spelling of 53156522565109 in words is "fifty-three trillion, one hundred fifty-six billion, five hundred twenty-two million, five hundred sixty-five thousand, one hundred nine".