505665060651 has 6 divisors (see below), whose sum is σ = 730405087620. Its totient is φ = 337110040428.

The previous prime is 505665060629. The next prime is 505665060679. The reversal of 505665060651 is 156060566505.

It is not a de Polignac number, because 505665060651 - 2²⁶ = 505597951787 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 505665060597 and 505665060606.

It is not an unprimeable number, because it can be changed into a prime (505665060451) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28092503361 + ... + 28092503378.

It is an arithmetic number, because the mean of its divisors is an integer number (121734181270).

Almost surely, 2^505665060651 is an apocalyptic number.

505665060651 is a deficient number, since it is larger than the sum of its proper divisors (224740026969).

505665060651 is a wasteful number, since it uses less digits than its factorization.

505665060651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56185006745 (or 56185006742 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 45.

The spelling of 505665060651 in words is "five hundred five billion, six hundred sixty-five million, sixty thousand, six hundred fifty-one".