91132727251 has 8 divisors (see below), whose sum is σ = 96213849680. Its totient is φ = 86080071168.

The previous prime is 91132727233. The next prime is 91132727291. The reversal of 91132727251 is 15272723119.

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

It is a cyclic number.

It is not a de Polignac number, because 91132727251 - 2¹⁹ = 91132202963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91132727221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7110006 + ... + 7122811.

It is an arithmetic number, because the mean of its divisors is an integer number (12026731210).

Almost surely, 2^91132727251 is an apocalyptic number.

91132727251 is a deficient number, since it is larger than the sum of its proper divisors (5081122429).

91132727251 is a wasteful number, since it uses less digits than its factorization.

91132727251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14233173.

The product of its digits is 52920, while the sum is 40.

The spelling of 91132727251 in words is "ninety-one billion, one hundred thirty-two million, seven hundred twenty-seven thousand, two hundred fifty-one".