91248977067 has 16 divisors (see below), whose sum is σ = 127063627008. Its totient is φ = 58138011360.

The previous prime is 91248977047. The next prime is 91248977107. The reversal of 91248977067 is 76077984219.

It is not a de Polignac number, because 91248977067 - 2¹⁰ = 91248976043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91248977067.

It is not an unprimeable number, because it can be changed into a prime (91248977047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 483868 + ... + 645465.

It is an arithmetic number, because the mean of its divisors is an integer number (7941476688).

Almost surely, 2^91248977067 is an apocalyptic number.

91248977067 is a deficient number, since it is larger than the sum of its proper divisors (35814649941).

91248977067 is a wasteful number, since it uses less digits than its factorization.

91248977067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130530.

The product of its (nonzero) digits is 10668672, while the sum is 60.

The spelling of 91248977067 in words is "ninety-one billion, two hundred forty-eight million, nine hundred seventy-seven thousand, sixty-seven".