5120165256542 has 16 divisors (see below), whose sum is σ = 8778477165792. Its totient is φ = 2194093785600.

The previous prime is 5120165256467. The next prime is 5120165256587. The reversal of 5120165256542 is 2456525610215.

It is a junction number, because it is equal to n+sod(n) for n = 5120165256493 and 5120165256502.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 21774959 + ... + 22008842.

It is an arithmetic number, because the mean of its divisors is an integer number (548654822862).

Almost surely, 2^{5120165256542} is an apocalyptic number.

5120165256542 is a deficient number, since it is larger than the sum of its proper divisors (3658311909250).

5120165256542 is a wasteful number, since it uses less digits than its factorization.

5120165256542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43792163.

The product of its (nonzero) digits is 720000, while the sum is 44.

The spelling of 5120165256542 in words is "five trillion, one hundred twenty billion, one hundred sixty-five million, two hundred fifty-six thousand, five hundred forty-two".