91524775980037 has 2 divisors, whose sum is σ = 91524775980038. Its totient is φ = 91524775980036.

The previous prime is 91524775979983. The next prime is 91524775980067. The reversal of 91524775980037 is 73008957742519.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83966598362241 + 7558177617796 = 9163329^2 + 2749214^2 .

It is a cyclic number.

It is not a de Polignac number, because 91524775980037 - 2¹⁹ = 91524775455749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91524775980067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45762387990018 + 45762387990019.

It is an arithmetic number, because the mean of its divisors is an integer number (45762387990019).

Almost surely, 2^{91524775980037} is an apocalyptic number.

It is an amenable number.

91524775980037 is a deficient number, since it is larger than the sum of its proper divisors (1).

91524775980037 is an equidigital number, since it uses as much as digits as its factorization.

91524775980037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 133358400, while the sum is 67.

The spelling of 91524775980037 in words is "ninety-one trillion, five hundred twenty-four billion, seven hundred seventy-five million, nine hundred eighty thousand, thirty-seven".