91745769552 has 40 divisors (see below), whose sum is σ = 237103202400. Its totient is φ = 30569884800.

The previous prime is 91745769551. The next prime is 91745769553. The reversal of 91745769552 is 25596754719.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (91745769551) and next prime (91745769553).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91745769551) 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, 252574 + ... + 497277.

It is an arithmetic number, because the mean of its divisors is an integer number (5927580060).

Almost surely, 2^91745769552 is an apocalyptic number.

It is an amenable number.

91745769552 is an abundant number, since it is smaller than the sum of its proper divisors (145357432848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91745769552 is a wasteful number, since it uses less digits than its factorization.

91745769552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752411 (or 752405 counting only the distinct ones).

The product of its digits is 23814000, while the sum is 60.

The spelling of 91745769552 in words is "ninety-one billion, seven hundred forty-five million, seven hundred sixty-nine thousand, five hundred fifty-two".