91625652836129 has 2 divisors, whose sum is σ = 91625652836130. Its totient is φ = 91625652836128.

The previous prime is 91625652836077. The next prime is 91625652836197. The reversal of 91625652836129 is 92163825652619.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48646509837025 + 42979142999104 = 6974705^2 + 6555848^2 .

It is a cyclic number.

It is not a de Polignac number, because 91625652836129 - 2¹² = 91625652832033 is a prime.

It is a super-2 number, since 2×91625652836129² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (91625652736129) 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, 45812826418064 + 45812826418065.

It is an arithmetic number, because the mean of its divisors is an integer number (45812826418065).

Almost surely, 2^{91625652836129} is an apocalyptic number.

It is an amenable number.

91625652836129 is a deficient number, since it is larger than the sum of its proper divisors (1).

91625652836129 is an equidigital number, since it uses as much as digits as its factorization.

91625652836129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 83980800, while the sum is 65.

The spelling of 91625652836129 in words is "ninety-one trillion, six hundred twenty-five billion, six hundred fifty-two million, eight hundred thirty-six thousand, one hundred twenty-nine".