91340435674 has 4 divisors (see below), whose sum is σ = 137010653514. Its totient is φ = 45670217836.

The previous prime is 91340435569. The next prime is 91340435699. The reversal of 91340435674 is 47653404319.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47653404319 = 409 ⋅116511991.

It can be written as a sum of positive squares in only one way, i.e., 60927517225 + 30412918449 = 246835^2 + 174393^2 .

It is a super-4 number, since 4×91340435674⁴ (a number of 45 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22835108917 + ... + 22835108920.

Almost surely, 2^91340435674 is an apocalyptic number.

91340435674 is a deficient number, since it is larger than the sum of its proper divisors (45670217840).

91340435674 is a wasteful number, since it uses less digits than its factorization.

91340435674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45670217839.

The product of its (nonzero) digits is 1088640, while the sum is 46.

The spelling of 91340435674 in words is "ninety-one billion, three hundred forty million, four hundred thirty-five thousand, six hundred seventy-four".