91847471706 has 48 divisors (see below), whose sum is σ = 199845921600. Its totient is φ = 30486383424.

The previous prime is 91847471699. The next prime is 91847471761. The reversal of 91847471706 is 60717474819.

It is a happy number.

91847471706 is a `hidden beast` number, since 91 + 84 + 7 + 471 + 7 + 0 + 6 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4403430 + ... + 4424238.

It is an arithmetic number, because the mean of its divisors is an integer number (4163456700).

Almost surely, 2^91847471706 is an apocalyptic number.

91847471706 is an abundant number, since it is smaller than the sum of its proper divisors (107998449894).

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

91847471706 is a wasteful number, since it uses less digits than its factorization.

91847471706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21843 (or 21840 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 54.

The spelling of 91847471706 in words is "ninety-one billion, eight hundred forty-seven million, four hundred seventy-one thousand, seven hundred six".