505105100655 has 16 divisors (see below), whose sum is σ = 813982323840. Its totient is φ = 267451332768.

The previous prime is 505105100651. The next prime is 505105100681. The reversal of 505105100655 is 556001501505.

It is not a de Polignac number, because 505105100655 - 2² = 505105100651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505105100651) 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, 121126237 + ... + 121130406.

It is an arithmetic number, because the mean of its divisors is an integer number (50873895240).

Almost surely, 2^505105100655 is an apocalyptic number.

505105100655 is a deficient number, since it is larger than the sum of its proper divisors (308877223185).

505105100655 is a wasteful number, since it uses less digits than its factorization.

505105100655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242256790.

The product of its (nonzero) digits is 18750, while the sum is 33.

The spelling of 505105100655 in words is "five hundred five billion, one hundred five million, one hundred thousand, six hundred fifty-five".