1205151521156 has 12 divisors (see below), whose sum is σ = 2300743813200. Its totient is φ = 547796145960.

The previous prime is 1205151521141. The next prime is 1205151521159. The reversal of 1205151521156 is 6511251515021.

It is not an unprimeable number, because it can be changed into a prime (1205151521159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13694903606 + ... + 13694903693.

It is an arithmetic number, because the mean of its divisors is an integer number (191728651100).

Almost surely, 2^{1205151521156} is an apocalyptic number.

It is an amenable number.

1205151521156 is a deficient number, since it is larger than the sum of its proper divisors (1095592292044).

1205151521156 is a wasteful number, since it uses less digits than its factorization.

1205151521156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27389807314 (or 27389807312 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 35.

The spelling of 1205151521156 in words is "one trillion, two hundred five billion, one hundred fifty-one million, five hundred twenty-one thousand, one hundred fifty-six".