91391827000 has 32 divisors (see below), whose sum is σ = 213856877520. Its totient is φ = 36556730400.

The previous prime is 91391826917. The next prime is 91391827013. The reversal of 91391827000 is 72819319.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45694914 + ... + 45696913.

Almost surely, 2^91391827000 is an apocalyptic number.

It is an amenable number.

91391827000 is an abundant number, since it is smaller than the sum of its proper divisors (122465050520).

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

91391827000 is a wasteful number, since it uses less digits than its factorization.

91391827000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91391848 (or 91391834 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 40.

The spelling of 91391827000 in words is "ninety-one billion, three hundred ninety-one million, eight hundred twenty-seven thousand".