91142452389 has 16 divisors (see below), whose sum is σ = 123867911232. Its totient is φ = 59590272768.

The previous prime is 91142452361. The next prime is 91142452399. The reversal of 91142452389 is 98325424119.

It is a happy number.

It is not a de Polignac number, because 91142452389 - 2³² = 86847485093 is a prime.

It is a super-2 number, since 2×91142452389² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91142452319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265722 + ... + 502884.

It is an arithmetic number, because the mean of its divisors is an integer number (7741744452).

Almost surely, 2^91142452389 is an apocalyptic number.

It is an amenable number.

91142452389 is a deficient number, since it is larger than the sum of its proper divisors (32725458843).

91142452389 is a wasteful number, since it uses less digits than its factorization.

91142452389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239636.

The product of its digits is 622080, while the sum is 48.

The spelling of 91142452389 in words is "ninety-one billion, one hundred forty-two million, four hundred fifty-two thousand, three hundred eighty-nine".