91326867251 has 8 divisors (see below), whose sum is σ = 94488600000. Its totient is φ = 88165969920.

The previous prime is 91326867239. The next prime is 91326867259. The reversal of 91326867251 is 15276862319.

It is a happy number.

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 91326867251 - 2³⁴ = 74146998067 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91326867251.

It is not an unprimeable number, because it can be changed into a prime (91326867259) 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, 17750 + ... + 427748.

It is an arithmetic number, because the mean of its divisors is an integer number (11811075000).

Almost surely, 2^91326867251 is an apocalyptic number.

91326867251 is a deficient number, since it is larger than the sum of its proper divisors (3161732749).

91326867251 is a wasteful number, since it uses less digits than its factorization.

91326867251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417709.

The product of its digits is 1088640, while the sum is 50.

The spelling of 91326867251 in words is "ninety-one billion, three hundred twenty-six million, eight hundred sixty-seven thousand, two hundred fifty-one".