5134156561 has 4 divisors (see below), whose sum is σ = 5218323124. Its totient is φ = 5049990000.

The previous prime is 5134156537. The next prime is 5134156579. The reversal of 5134156561 is 1656514315.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1656514315 = 5 ⋅331302863.

It can be written as a sum of positive squares in 2 ways, for example, as 2994168961 + 2139987600 = 54719^2 + 46260^2 .

It is a cyclic number.

It is not a de Polignac number, because 5134156561 - 2¹⁵ = 5134123793 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5134156561.

It is not an unprimeable number, because it can be changed into a prime (5134156361) 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, 42083190 + ... + 42083311.

It is an arithmetic number, because the mean of its divisors is an integer number (1304580781).

Almost surely, 2^5134156561 is an apocalyptic number.

It is an amenable number.

5134156561 is a deficient number, since it is larger than the sum of its proper divisors (84166563).

5134156561 is an equidigital number, since it uses as much as digits as its factorization.

5134156561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84166562.

The product of its digits is 54000, while the sum is 37.

The square root of 5134156561 is about 71653.0289729611. The cubic root of 5134156561 is about 1725.1347999118.

The spelling of 5134156561 in words is "five billion, one hundred thirty-four million, one hundred fifty-six thousand, five hundred sixty-one".