91340298799638 has 16 divisors (see below), whose sum is σ = 208777825827840. Its totient is φ = 26097228228456.

The previous prime is 91340298799637. The next prime is 91340298799747. The reversal of 91340298799638 is 83699789204319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91340298799637) 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 7 ways as a sum of consecutive naturals, for example, 1087384509478 + ... + 1087384509561.

It is an arithmetic number, because the mean of its divisors is an integer number (13048614114240).

Almost surely, 2^{91340298799638} is an apocalyptic number.

91340298799638 is an abundant number, since it is smaller than the sum of its proper divisors (117437527028202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91340298799638 is a wasteful number, since it uses less digits than its factorization.

91340298799638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2174769019051.

The product of its (nonzero) digits is 1269789696, while the sum is 78.

The spelling of 91340298799638 in words is "ninety-one trillion, three hundred forty billion, two hundred ninety-eight million, seven hundred ninety-nine thousand, six hundred thirty-eight".