1521161306252 has 12 divisors (see below), whose sum is σ = 3042322612560. Its totient is φ = 651926274096.

The previous prime is 1521161306179. The next prime is 1521161306299. The reversal of 1521161306252 is 2526031611251.

1521161306252 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27163594727 + ... + 27163594782.

It is an arithmetic number, because the mean of its divisors is an integer number (253526884380).

Almost surely, 2^{1521161306252} is an apocalyptic number.

It is an amenable number.

1521161306252 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1521161306252 is a wasteful number, since it uses less digits than its factorization.

1521161306252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54327189520 (or 54327189518 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 1521161306252 in words is "one trillion, five hundred twenty-one billion, one hundred sixty-one million, three hundred six thousand, two hundred fifty-two".