91488725123 has 2 divisors, whose sum is σ = 91488725124. Its totient is φ = 91488725122.

The previous prime is 91488725051. The next prime is 91488725219. The reversal of 91488725123 is 32152788419.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91488725123 - 2⁸ = 91488724867 is a prime.

It is a super-3 number, since 3×91488725123³ (a number of 34 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (91488725323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45744362561 + 45744362562.

It is an arithmetic number, because the mean of its divisors is an integer number (45744362562).

Almost surely, 2^91488725123 is an apocalyptic number.

91488725123 is a deficient number, since it is larger than the sum of its proper divisors (1).

91488725123 is an equidigital number, since it uses as much as digits as its factorization.

91488725123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 50.

The spelling of 91488725123 in words is "ninety-one billion, four hundred eighty-eight million, seven hundred twenty-five thousand, one hundred twenty-three".