5142531645 has 20 divisors (see below), whose sum is σ = 9218464860. Its totient is φ = 2742683328.

The previous prime is 5142531631. The next prime is 5142531661. The reversal of 5142531645 is 5461352415.

5142531645 is a `hidden beast` number, since 5 + 1 + 4 + 2 + 5 + 3 + 1 + 645 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2941326756 + 2201204889 = 54234^2 + 46917^2 .

It is not a de Polignac number, because 5142531645 - 2¹⁰ = 5142530621 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6348400 + ... + 6349209.

It is an arithmetic number, because the mean of its divisors is an integer number (460923243).

Almost surely, 2^5142531645 is an apocalyptic number.

It is an amenable number.

5142531645 is a deficient number, since it is larger than the sum of its proper divisors (4075933215).

5142531645 is a wasteful number, since it uses less digits than its factorization.

5142531645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12697626 (or 12697617 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 5142531645 is about 71711.4470987722. The cubic root of 5142531645 is about 1726.0723313660.

The spelling of 5142531645 in words is "five billion, one hundred forty-two million, five hundred thirty-one thousand, six hundred forty-five".