1535401253532 has 96 divisors (see below), whose sum is σ = 3848321074752. Its totient is φ = 474723680256.

The previous prime is 1535401253531. The next prime is 1535401253627. The reversal of 1535401253532 is 2353521045351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1535401253531) 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 31 ways as a sum of consecutive naturals, for example, 19275178 + ... + 19354670.

It is an arithmetic number, because the mean of its divisors is an integer number (40086677862).

Almost surely, 2^{1535401253532} is an apocalyptic number.

1535401253532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1535401253532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1924160537376).

1535401253532 is an abundant number, since it is smaller than the sum of its proper divisors (2312919821220).

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

1535401253532 is a wasteful number, since it uses less digits than its factorization.

1535401253532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80887 (or 80885 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 39.

Adding to 1535401253532 its reverse (2353521045351), we get a palindrome (3888922298883).

The spelling of 1535401253532 in words is "one trillion, five hundred thirty-five billion, four hundred one million, two hundred fifty-three thousand, five hundred thirty-two".