505934960721 has 8 divisors (see below), whose sum is σ = 678619349184. Its totient is φ = 335270273040.

The previous prime is 505934960719. The next prime is 505934960723. The reversal of 505934960721 is 127069439505.

It is an interprime number because it is at equal distance from previous prime (505934960719) and next prime (505934960723).

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

It is not a de Polignac number, because 505934960721 - 2¹ = 505934960719 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (505934960723) 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, 504924610 + ... + 504925611.

It is an arithmetic number, because the mean of its divisors is an integer number (84827418648).

Almost surely, 2^505934960721 is an apocalyptic number.

It is an amenable number.

505934960721 is a deficient number, since it is larger than the sum of its proper divisors (172684388463).

505934960721 is a wasteful number, since it uses less digits than its factorization.

505934960721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009850391.

The product of its (nonzero) digits is 2041200, while the sum is 51.

The spelling of 505934960721 in words is "five hundred five billion, nine hundred thirty-four million, nine hundred sixty thousand, seven hundred twenty-one".