12195215395758 has 96 divisors (see below), whose sum is σ = 27963700876800. Its totient is φ = 3830378735808.

The previous prime is 12195215395697. The next prime is 12195215395787. The reversal of 12195215395758 is 85759351259121.

12195215395758 is a `hidden beast` number, since 1 + 2 + 1 + 9 + 5 + 2 + 1 + 53 + 9 + 575 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 12195215395695 and 12195215395704.

It is a congruent number.

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, 76907391 + ... + 77065797.

It is an arithmetic number, because the mean of its divisors is an integer number (291288550800).

Almost surely, 2^{12195215395758} is an apocalyptic number.

12195215395758 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12195215395758, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13981850438400).

12195215395758 is an abundant number, since it is smaller than the sum of its proper divisors (15768485481042).

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

12195215395758 is a wasteful number, since it uses less digits than its factorization.

12195215395758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159646 (or 159643 counting only the distinct ones).

The product of its digits is 34020000, while the sum is 63.

The spelling of 12195215395758 in words is "twelve trillion, one hundred ninety-five billion, two hundred fifteen million, three hundred ninety-five thousand, seven hundred fifty-eight".