505755153561 has 8 divisors (see below), whose sum is σ = 770674519744. Its totient is φ = 289002944880.

The previous prime is 505755153479. The next prime is 505755153577. The reversal of 505755153561 is 165351557505.

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

It is not a de Polignac number, because 505755153561 - 2⁹ = 505755153049 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 505755153561.

It is not an unprimeable number, because it can be changed into a prime (505755153581) 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, 12041789350 + ... + 12041789391.

It is an arithmetic number, because the mean of its divisors is an integer number (96334314968).

Almost surely, 2^505755153561 is an apocalyptic number.

It is an amenable number.

505755153561 is a deficient number, since it is larger than the sum of its proper divisors (264919366183).

505755153561 is a wasteful number, since it uses less digits than its factorization.

505755153561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24083578751.

The product of its (nonzero) digits is 1968750, while the sum is 48.

The spelling of 505755153561 in words is "five hundred five billion, seven hundred fifty-five million, one hundred fifty-three thousand, five hundred sixty-one".