91827274472 has 8 divisors (see below), whose sum is σ = 172176139650. Its totient is φ = 45913637232.

The previous prime is 91827274463. The next prime is 91827274499. The reversal of 91827274472 is 27447272819.

It can be written as a sum of positive squares in only one way, i.e., 56209771396 + 35617503076 = 237086^2 + 188726^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5739204647 + ... + 5739204662.

Almost surely, 2^91827274472 is an apocalyptic number.

It is an amenable number.

91827274472 is a deficient number, since it is larger than the sum of its proper divisors (80348865178).

91827274472 is a wasteful number, since it uses less digits than its factorization.

91827274472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11478409315 (or 11478409311 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 53.

The spelling of 91827274472 in words is "ninety-one billion, eight hundred twenty-seven million, two hundred seventy-four thousand, four hundred seventy-two".