1521534041261 has 8 divisors (see below), whose sum is σ = 1648386950784. Its totient is φ = 1396082821680.

The previous prime is 1521534041257. The next prime is 1521534041351. The reversal of 1521534041261 is 1621404351251.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1521534041261 - 2² = 1521534041257 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1521534040261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350420225 + ... + 350424566.

It is an arithmetic number, because the mean of its divisors is an integer number (206048368848).

Almost surely, 2^{1521534041261} is an apocalyptic number.

It is an amenable number.

1521534041261 is a deficient number, since it is larger than the sum of its proper divisors (126852909523).

1521534041261 is a wasteful number, since it uses less digits than its factorization.

1521534041261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700844971.

The product of its (nonzero) digits is 28800, while the sum is 35.

The spelling of 1521534041261 in words is "one trillion, five hundred twenty-one billion, five hundred thirty-four million, forty-one thousand, two hundred sixty-one".