1531758136352 has 12 divisors (see below), whose sum is σ = 3015648831006. Its totient is φ = 765879068160.

The previous prime is 1531758136327. The next prime is 1531758136357. The reversal of 1531758136352 is 2536318571351.

It can be written as a sum of positive squares in only one way, i.e., 1433661390736 + 98096745616 = 1197356^2 + 313204^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1531758136352.

It is not an unprimeable number, because it can be changed into a prime (1531758136357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23933720849 + ... + 23933720912.

Almost surely, 2^{1531758136352} is an apocalyptic number.

It is an amenable number.

1531758136352 is a deficient number, since it is larger than the sum of its proper divisors (1483890694654).

1531758136352 is an equidigital number, since it uses as much as digits as its factorization.

1531758136352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47867441771 (or 47867441763 counting only the distinct ones).

The product of its digits is 2268000, while the sum is 50.

The spelling of 1531758136352 in words is "one trillion, five hundred thirty-one billion, seven hundred fifty-eight million, one hundred thirty-six thousand, three hundred fifty-two".