5185556678 has 32 divisors (see below), whose sum is σ = 8180282880. Its totient is φ = 2460648960.

The previous prime is 5185556641. The next prime is 5185556693. The reversal of 5185556678 is 8766555815.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4260326 + ... + 4261542.

It is an arithmetic number, because the mean of its divisors is an integer number (255633840).

Almost surely, 2^5185556678 is an apocalyptic number.

5185556678 is a deficient number, since it is larger than the sum of its proper divisors (2994726202).

5185556678 is a wasteful number, since it uses less digits than its factorization.

5185556678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1892.

The product of its digits is 10080000, while the sum is 56.

The square root of 5185556678 is about 72010.8094524704. The cubic root of 5185556678 is about 1730.8727014591.

The spelling of 5185556678 in words is "five billion, one hundred eighty-five million, five hundred fifty-six thousand, six hundred seventy-eight".