5156213641 has 4 divisors (see below), whose sum is σ = 5157727812. Its totient is φ = 5154699472.

The previous prime is 5156213639. The next prime is 5156213651. The reversal of 5156213641 is 1463126515.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2359919241 + 2796294400 = 48579^2 + 52880^2 .

It is a cyclic number.

It is not a de Polignac number, because 5156213641 - 2¹ = 5156213639 is a prime.

It is a super-2 number, since 2×5156213641² = 53173078223268953762, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5156213597 and 5156213606.

It is not an unprimeable number, because it can be changed into a prime (5156213651) 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, 751966 + ... + 758791.

It is an arithmetic number, because the mean of its divisors is an integer number (1289431953).

Almost surely, 2^5156213641 is an apocalyptic number.

It is an amenable number.

5156213641 is a deficient number, since it is larger than the sum of its proper divisors (1514171).

5156213641 is a wasteful number, since it uses less digits than its factorization.

5156213641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1514170.

The product of its digits is 21600, while the sum is 34.

The square root of 5156213641 is about 71806.7799096993. The cubic root of 5156213641 is about 1727.6017467890.

The spelling of 5156213641 in words is "five billion, one hundred fifty-six million, two hundred thirteen thousand, six hundred forty-one".