505012770571551 has 16 divisors (see below), whose sum is σ = 734564912226048. Its totient is φ = 306067978174400.

The previous prime is 505012770571531. The next prime is 505012770571609. The reversal of 505012770571551 is 155175077210505.

It is a cyclic number.

It is not a de Polignac number, because 505012770571551 - 2³⁰ = 505011696829727 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 505012770571494 and 505012770571503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505012770571501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20092390 + ... + 37599596.

It is an arithmetic number, because the mean of its divisors is an integer number (45910307014128).

Almost surely, 2^{505012770571551} is an apocalyptic number.

505012770571551 is a deficient number, since it is larger than the sum of its proper divisors (229552141654497).

505012770571551 is a wasteful number, since it uses less digits than its factorization.

505012770571551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18381342.

The product of its (nonzero) digits is 2143750, while the sum is 51.

The spelling of 505012770571551 in words is "five hundred five trillion, twelve billion, seven hundred seventy million, five hundred seventy-one thousand, five hundred fifty-one".