505640127730 has 32 divisors (see below), whose sum is σ = 933406571520. Its totient is φ = 197124432960.

The previous prime is 505640127709. The next prime is 505640127739. The reversal of 505640127730 is 37721046505.

It is not an unprimeable number, because it can be changed into a prime (505640127739) 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, 2138361 + ... + 2363020.

It is an arithmetic number, because the mean of its divisors is an integer number (29168955360).

Almost surely, 2^505640127730 is an apocalyptic number.

505640127730 is a deficient number, since it is larger than the sum of its proper divisors (427766443790).

505640127730 is a wasteful number, since it uses less digits than its factorization.

505640127730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4501674.

The product of its (nonzero) digits is 176400, while the sum is 40.

The spelling of 505640127730 in words is "five hundred five billion, six hundred forty million, one hundred twenty-seven thousand, seven hundred thirty".