1531909753068 has 12 divisors (see below), whose sum is σ = 3574456090520. Its totient is φ = 510636584352.

The previous prime is 1531909753039. The next prime is 1531909753151. The reversal of 1531909753068 is 8603579091351.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1531909752999 and 1531909753017.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 63829573033 + ... + 63829573056.

Almost surely, 2^{1531909753068} is an apocalyptic number.

It is an amenable number.

1531909753068 is an abundant number, since it is smaller than the sum of its proper divisors (2042546337452).

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

1531909753068 is a wasteful number, since it uses less digits than its factorization.

1531909753068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127659146096 (or 127659146094 counting only the distinct ones).

The product of its (nonzero) digits is 6123600, while the sum is 57.

The spelling of 1531909753068 in words is "one trillion, five hundred thirty-one billion, nine hundred nine million, seven hundred fifty-three thousand, sixty-eight".