5156891662690 has 8 divisors (see below), whose sum is σ = 9282404992860. Its totient is φ = 2062756665072.

The previous prime is 5156891662679. The next prime is 5156891662709. The reversal of 5156891662690 is 962661986515.

It can be written as a sum of positive squares in 2 ways, for example, as 5106736716481 + 50154946209 = 2259809^2 + 223953^2 .

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

It is a super-2 number, since 2×5156891662690² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257844583125 + ... + 257844583144.

Almost surely, 2^{5156891662690} is an apocalyptic number.

5156891662690 is a deficient number, since it is larger than the sum of its proper divisors (4125513330170).

5156891662690 is a wasteful number, since it uses less digits than its factorization.

5156891662690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515689166276.

The product of its (nonzero) digits is 41990400, while the sum is 64.

The spelling of 5156891662690 in words is "five trillion, one hundred fifty-six billion, eight hundred ninety-one million, six hundred sixty-two thousand, six hundred ninety".