5156556611 has 4 divisors (see below), whose sum is σ = 5159302800. Its totient is φ = 5153810424.

The previous prime is 5156556607. The next prime is 5156556617. The reversal of 5156556611 is 1166556515.

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

It is a cyclic number.

It is not a de Polignac number, because 5156556611 - 2² = 5156556607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5156556617) 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, 1370276 + ... + 1374033.

It is an arithmetic number, because the mean of its divisors is an integer number (1289825700).

Almost surely, 2^5156556611 is an apocalyptic number.

5156556611 is a deficient number, since it is larger than the sum of its proper divisors (2746189).

5156556611 is a wasteful number, since it uses less digits than its factorization.

5156556611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2746188.

The product of its digits is 135000, while the sum is 41.

The square root of 5156556611 is about 71809.1680149547. The cubic root of 5156556611 is about 1727.6400502467.

The spelling of 5156556611 in words is "five billion, one hundred fifty-six million, five hundred fifty-six thousand, six hundred eleven".