1205334231156 has 144 divisors (see below), whose sum is σ = 3368014872768. Its totient is φ = 360422630400.

The previous prime is 1205334231119. The next prime is 1205334231169. The reversal of 1205334231156 is 6511324335021.

1205334231156 is a `hidden beast` number, since 1 + 2 + 0 + 5 + 334 + 2 + 311 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1205334231156.

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, 10098466 + ... + 10217126.

It is an arithmetic number, because the mean of its divisors is an integer number (23388992172).

Almost surely, 2^{1205334231156} 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 1205334231156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1684007436384).

1205334231156 is an abundant number, since it is smaller than the sum of its proper divisors (2162680641612).

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

1205334231156 is a wasteful number, since it uses less digits than its factorization.

1205334231156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119022 (or 119017 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

Adding to 1205334231156 its reverse (6511324335021), we get a palindrome (7716658566177).

The spelling of 1205334231156 in words is "one trillion, two hundred five billion, three hundred thirty-four million, two hundred thirty-one thousand, one hundred fifty-six".