91130602212 has 144 divisors (see below), whose sum is σ = 251101730880. Its totient is φ = 27700358400.

The previous prime is 91130602183. The next prime is 91130602259. The reversal of 91130602212 is 21220603119.

91130602212 is a `hidden beast` number, since 9 + 1 + 1 + 30 + 602 + 21 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14036287 + ... + 14042777.

It is an arithmetic number, because the mean of its divisors is an integer number (1743762020).

Almost surely, 2^91130602212 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 91130602212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125550865440).

91130602212 is an abundant number, since it is smaller than the sum of its proper divisors (159971128668).

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

91130602212 is a wasteful number, since it uses less digits than its factorization.

91130602212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6874 (or 6869 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The spelling of 91130602212 in words is "ninety-one billion, one hundred thirty million, six hundred two thousand, two hundred twelve".