10145536133531 has 4 divisors (see below), whose sum is σ = 10149513218064. Its totient is φ = 10141559049000.

The previous prime is 10145536133521. The next prime is 10145536133581. The reversal of 10145536133531 is 13533163554101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10145536133531 is a prime.

It is a super-2 number, since 2×10145536133531² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10145536133521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1988538440 + ... + 1988543541.

It is an arithmetic number, because the mean of its divisors is an integer number (2537378304516).

Almost surely, 2^{10145536133531} is an apocalyptic number.

10145536133531 is a deficient number, since it is larger than the sum of its proper divisors (3977084533).

10145536133531 is an equidigital number, since it uses as much as digits as its factorization.

10145536133531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3977084532.

The product of its (nonzero) digits is 243000, while the sum is 41.

Adding to 10145536133531 its reverse (13533163554101), we get a palindrome (23678699687632).

The spelling of 10145536133531 in words is "ten trillion, one hundred forty-five billion, five hundred thirty-six million, one hundred thirty-three thousand, five hundred thirty-one".