91758425841 has 12 divisors (see below), whose sum is σ = 133906340932. Its totient is φ = 60541641216.

The previous prime is 91758425807. The next prime is 91758425897. The reversal of 91758425841 is 14852485719.

91758425841 is a `hidden beast` number, since 9 + 1 + 7 + 58 + 4 + 2 + 584 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 65129081616 + 26629344225 = 255204^2 + 163185^2 .

It is not a de Polignac number, because 91758425841 - 2⁹ = 91758425329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91758426841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52552636 + ... + 52554381.

Almost surely, 2^91758425841 is an apocalyptic number.

It is an amenable number.

91758425841 is a deficient number, since it is larger than the sum of its proper divisors (42147915091).

91758425841 is a wasteful number, since it uses less digits than its factorization.

91758425841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105107120 (or 105107117 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 54.

The spelling of 91758425841 in words is "ninety-one billion, seven hundred fifty-eight million, four hundred twenty-five thousand, eight hundred forty-one".