91769359356 has 72 divisors (see below), whose sum is σ = 234948888720. Its totient is φ = 30197873664.

The previous prime is 91769359351. The next prime is 91769359361. The reversal of 91769359356 is 65395396719.

It is an interprime number because it is at equal distance from previous prime (91769359351) and next prime (91769359361).

It is a super-2 number, since 2×91769359356² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 91769359293 and 91769359302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91769359351) 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, 4091340 + ... + 4113708.

It is an arithmetic number, because the mean of its divisors is an integer number (3263179010).

Almost surely, 2^91769359356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91769359356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117474444360).

91769359356 is an abundant number, since it is smaller than the sum of its proper divisors (143179529364).

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

91769359356 is a wasteful number, since it uses less digits than its factorization.

91769359356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23835 (or 23830 counting only the distinct ones).

The product of its digits is 41334300, while the sum is 63.

The spelling of 91769359356 in words is "ninety-one billion, seven hundred sixty-nine million, three hundred fifty-nine thousand, three hundred fifty-six".