102091235712 has 128 divisors (see below), whose sum is σ = 277928914560. Its totient is φ = 33186004992.

The previous prime is 102091235711. The next prime is 102091235747. The reversal of 102091235712 is 217532190201.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102091235711) 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, 11107983 + ... + 11117169.

It is an arithmetic number, because the mean of its divisors is an integer number (2171319645).

Almost surely, 2^102091235712 is an apocalyptic number.

102091235712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102091235712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138964457280).

102091235712 is an abundant number, since it is smaller than the sum of its proper divisors (175837678848).

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

102091235712 is an equidigital number, since it uses as much as digits as its factorization.

102091235712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9920 (or 9908 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 33.

The spelling of 102091235712 in words is "one hundred two billion, ninety-one million, two hundred thirty-five thousand, seven hundred twelve".