1521131605134 has 8 divisors (see below), whose sum is σ = 3042263210280. Its totient is φ = 507043868376.

The previous prime is 1521131605117. The next prime is 1521131605141. The reversal of 1521131605134 is 4315061311251.

It is a happy number.

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

1521131605134 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1521131605095 and 1521131605104.

It is a congruent 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, 126760967089 + ... + 126760967100.

It is an arithmetic number, because the mean of its divisors is an integer number (380282901285).

Almost surely, 2^{1521131605134} is an apocalyptic number.

1521131605134 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.

1521131605134 is a wasteful number, since it uses less digits than its factorization.

1521131605134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253521934194.

The product of its (nonzero) digits is 10800, while the sum is 33.

Adding to 1521131605134 its reverse (4315061311251), we get a palindrome (5836192916385).

The spelling of 1521131605134 in words is "one trillion, five hundred twenty-one billion, one hundred thirty-one million, six hundred five thousand, one hundred thirty-four".