1540550132433 has 18 divisors (see below), whose sum is σ = 2409578414646. Its totient is φ = 948030849792.

The previous prime is 1540550132417. The next prime is 1540550132447. The reversal of 1540550132433 is 3342310550451.

1540550132433 is a `hidden beast` number, since 1 + 5 + 40 + 5 + 50 + 132 + 433 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 138002591169 + 1402547541264 = 371487^2 + 1184292^2 .

It is not a de Polignac number, because 1540550132433 - 2⁴ = 1540550132417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1540550132483) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 506425216 + ... + 506428257.

Almost surely, 2^{1540550132433} is an apocalyptic number.

1540550132433 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1540550132433 is a deficient number, since it is larger than the sum of its proper divisors (869028282213).

1540550132433 is a wasteful number, since it uses less digits than its factorization.

1540550132433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012853505 (or 1012853489 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

Adding to 1540550132433 its reverse (3342310550451), we get a palindrome (4882860682884).

The spelling of 1540550132433 in words is "one trillion, five hundred forty billion, five hundred fifty million, one hundred thirty-two thousand, four hundred thirty-three".