5156066538 has 96 divisors (see below), whose sum is σ = 13348048896. Its totient is φ = 1406411424.

The previous prime is 5156066519. The next prime is 5156066551. The reversal of 5156066538 is 8356606515.

5156066538 is a `hidden beast` number, since 5 + 1 + 5 + 606 + 6 + 5 + 38 = 666.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 5156066493 and 5156066502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1862031 + ... + 1864797.

It is an arithmetic number, because the mean of its divisors is an integer number (139042176).

Almost surely, 2^5156066538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5156066538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6674024448).

5156066538 is an abundant number, since it is smaller than the sum of its proper divisors (8191982358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5156066538 is a wasteful number, since it uses less digits than its factorization.

5156066538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3448 (or 3445 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The square root of 5156066538 is about 71805.7556049653. The cubic root of 5156066538 is about 1727.5853175617.

The spelling of 5156066538 in words is "five billion, one hundred fifty-six million, sixty-six thousand, five hundred thirty-eight".