5156720518 has 4 divisors (see below), whose sum is σ = 7735080780. Its totient is φ = 2578360258.

The previous prime is 5156720507. The next prime is 5156720531. The reversal of 5156720518 is 8150276515.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8150276515 = 5 ⋅1630055303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1289180128 + ... + 1289180131.

It is an arithmetic number, because the mean of its divisors is an integer number (1933770195).

Almost surely, 2^5156720518 is an apocalyptic number.

5156720518 is a deficient number, since it is larger than the sum of its proper divisors (2578360262).

5156720518 is a wasteful number, since it uses less digits than its factorization.

5156720518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2578360261.

The product of its (nonzero) digits is 84000, while the sum is 40.

The square root of 5156720518 is about 71810.3092738083. The cubic root of 5156720518 is about 1727.6583550522.

The spelling of 5156720518 in words is "five billion, one hundred fifty-six million, seven hundred twenty thousand, five hundred eighteen".