510561645502081 has 8 divisors (see below), whose sum is σ = 511611078766464. Its totient is φ = 509512216550400.

The previous prime is 510561645502061. The next prime is 510561645502091. The reversal of 510561645502081 is 180205546165015.

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

It is a cyclic number.

It is not a de Polignac number, because 510561645502081 - 2⁵ = 510561645502049 is a prime.

It is a super-2 number, since 2×510561645502081² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (510561645502061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 360135681 + ... + 361550593.

It is an arithmetic number, because the mean of its divisors is an integer number (63951384845808).

Almost surely, 2^{510561645502081} is an apocalyptic number.

It is an amenable number.

510561645502081 is a deficient number, since it is larger than the sum of its proper divisors (1049433264383).

510561645502081 is a wasteful number, since it uses less digits than its factorization.

510561645502081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2156351.

The product of its (nonzero) digits is 1440000, while the sum is 49.

The spelling of 510561645502081 in words is "five hundred ten trillion, five hundred sixty-one billion, six hundred forty-five million, five hundred two thousand, eighty-one".