91430249426 has 8 divisors (see below), whose sum is σ = 137249354880. Its totient is φ = 45680464468.

The previous prime is 91430249419. The next prime is 91430249431. The reversal of 91430249426 is 62494203419.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17326826 + ... + 17332101.

It is an arithmetic number, because the mean of its divisors is an integer number (17156169360).

Almost surely, 2^91430249426 is an apocalyptic number.

91430249426 is a deficient number, since it is larger than the sum of its proper divisors (45819105454).

91430249426 is a wasteful number, since it uses less digits than its factorization.

91430249426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34660248.

The product of its (nonzero) digits is 373248, while the sum is 44.

The spelling of 91430249426 in words is "ninety-one billion, four hundred thirty million, two hundred forty-nine thousand, four hundred twenty-six".