5551956813 has 8 divisors (see below), whose sum is σ = 7972040608. Its totient is φ = 3416588784.

The previous prime is 5551956803. The next prime is 5551956833. The reversal of 5551956813 is 3186591555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5551956813 - 2⁴ = 5551956797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5551956803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71178895 + ... + 71178972.

It is an arithmetic number, because the mean of its divisors is an integer number (996505076).

Almost surely, 2^5551956813 is an apocalyptic number.

It is an amenable number.

5551956813 is a deficient number, since it is larger than the sum of its proper divisors (2420083795).

5551956813 is a wasteful number, since it uses less digits than its factorization.

5551956813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142357883.

The product of its digits is 810000, while the sum is 48.

The square root of 5551956813 is about 74511.4542402710. The cubic root of 5551956813 is about 1770.7151092385.

The spelling of 5551956813 in words is "five billion, five hundred fifty-one million, nine hundred fifty-six thousand, eight hundred thirteen".