91355814852 has 48 divisors (see below), whose sum is σ = 213685601472. Its totient is φ = 30377451520.

The previous prime is 91355814841. The next prime is 91355814853. The reversal of 91355814852 is 25841855319.

It is a junction number, because it is equal to n+sod(n) for n = 91355814795 and 91355814804.

It is not an unprimeable number, because it can be changed into a prime (91355814853) 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, 9864208 + ... + 9873464.

It is an arithmetic number, because the mean of its divisors is an integer number (4451783364).

Almost surely, 2^91355814852 is an apocalyptic number.

It is an amenable number.

91355814852 is an abundant number, since it is smaller than the sum of its proper divisors (122329786620).

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

91355814852 is a wasteful number, since it uses less digits than its factorization.

91355814852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11188 (or 11186 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 51.

The spelling of 91355814852 in words is "ninety-one billion, three hundred fifty-five million, eight hundred fourteen thousand, eight hundred fifty-two".