91364439144256 has 112 divisors (see below), whose sum is σ = 184003597382976. Its totient is φ = 45004608405504.

The previous prime is 91364439144233. The next prime is 91364439144271. The reversal of 91364439144256 is 65244193446319.

It is a junction number, because it is equal to n+sod(n) for n = 91364439144194 and 91364439144203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2902561990 + ... + 2902593466.

It is an arithmetic number, because the mean of its divisors is an integer number (1642889262348).

Almost surely, 2^{91364439144256} 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 91364439144256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92001798691488).

91364439144256 is an abundant number, since it is smaller than the sum of its proper divisors (92639158238720).

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

91364439144256 is a wasteful number, since it uses less digits than its factorization.

91364439144256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33096 (or 33086 counting only the distinct ones).

The product of its digits is 67184640, while the sum is 61.

The spelling of 91364439144256 in words is "ninety-one trillion, three hundred sixty-four billion, four hundred thirty-nine million, one hundred forty-four thousand, two hundred fifty-six".