7542432513 has 72 divisors (see below), whose sum is σ = 13721786624. Its totient is φ = 3907854720.

The previous prime is 7542432511. The next prime is 7542432533. The reversal of 7542432513 is 3152342457.

7542432513 is a `hidden beast` number, since 75 + 42 + 4 + 32 + 513 = 666.

7542432513 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7542432513 - 2¹ = 7542432511 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7542432511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3528381 + ... + 3530517.

Almost surely, 2^7542432513 is an apocalyptic number.

It is an amenable number.

7542432513 is a deficient number, since it is larger than the sum of its proper divisors (6179354111).

7542432513 is a wasteful number, since it uses less digits than its factorization.

7542432513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2635 (or 2621 counting only the distinct ones).

The product of its digits is 100800, while the sum is 36.

The square root of 7542432513 is about 86847.1790733585. The cubic root of 7542432513 is about 1961.1183844399.

The spelling of 7542432513 in words is "seven billion, five hundred forty-two million, four hundred thirty-two thousand, five hundred thirteen".