91394546500 has 48 divisors (see below), whose sum is σ = 201582094896. Its totient is φ = 36195840000.

The previous prime is 91394546483. The next prime is 91394546501. The reversal of 91394546500 is 564549319.

It can be written as a sum of positive squares in 8 ways, for example, as 30532669696 + 60861876804 = 174736^2 + 246702^2 .

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (91394546501) 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, 854397 + ... + 955396.

It is an arithmetic number, because the mean of its divisors is an integer number (4199626977).

Almost surely, 2^91394546500 is an apocalyptic number.

It is an amenable number.

91394546500 is an abundant number, since it is smaller than the sum of its proper divisors (110187548396).

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

91394546500 is a wasteful number, since it uses less digits than its factorization.

91394546500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1809913 (or 1809901 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 46.

The spelling of 91394546500 in words is "ninety-one billion, three hundred ninety-four million, five hundred forty-six thousand, five hundred".