1535132631645 has 32 divisors (see below), whose sum is σ = 2731918285440. Its totient is φ = 817899321600.

The previous prime is 1535132631629. The next prime is 1535132631647. The reversal of 1535132631645 is 5461362315351.

1535132631645 is a `hidden beast` number, since 1 + 5 + 3 + 5 + 1 + 3 + 2 + 631 + 6 + 4 + 5 = 666.

It is not a de Polignac number, because 1535132631645 - 2⁴ = 1535132631629 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1535132631645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1535132631647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5687631 + ... + 5951420.

It is an arithmetic number, because the mean of its divisors is an integer number (85372446420).

Almost surely, 2^{1535132631645} is an apocalyptic number.

1535132631645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1535132631645 is a deficient number, since it is larger than the sum of its proper divisors (1196785653795).

1535132631645 is a wasteful number, since it uses less digits than its factorization.

1535132631645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11640042 (or 11640036 counting only the distinct ones).

The product of its digits is 972000, while the sum is 45.

Adding to 1535132631645 its reverse (5461362315351), we get a palindrome (6996494946996).

The spelling of 1535132631645 in words is "one trillion, five hundred thirty-five billion, one hundred thirty-two million, six hundred thirty-one thousand, six hundred forty-five".