91195712422 has 48 divisors (see below), whose sum is σ = 145315314144. Its totient is φ = 42916896000.

The previous prime is 91195712417. The next prime is 91195712423. The reversal of 91195712422 is 22421759119.

It is a super-2 number, since 2×91195712422² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91195712423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 103513422 + ... + 103514302.

It is an arithmetic number, because the mean of its divisors is an integer number (3027402378).

Almost surely, 2^91195712422 is an apocalyptic number.

91195712422 is a deficient number, since it is larger than the sum of its proper divisors (54119601722).

91195712422 is a wasteful number, since it uses less digits than its factorization.

91195712422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693 (or 1674 counting only the distinct ones).

The product of its digits is 90720, while the sum is 43.

The spelling of 91195712422 in words is "ninety-one billion, one hundred ninety-five million, seven hundred twelve thousand, four hundred twenty-two".