505697281873 has 8 divisors (see below), whose sum is σ = 578002979840. Its totient is φ = 433407391200.

The previous prime is 505697281871. The next prime is 505697281909. The reversal of 505697281873 is 378182796505.

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

It is not a de Polignac number, because 505697281873 - 2¹ = 505697281871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505697281871) 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, 3883188 + ... + 4011301.

It is an arithmetic number, because the mean of its divisors is an integer number (72250372480).

Almost surely, 2^505697281873 is an apocalyptic number.

It is an amenable number.

505697281873 is a deficient number, since it is larger than the sum of its proper divisors (72305697967).

505697281873 is an equidigital number, since it uses as much as digits as its factorization.

505697281873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7903647.

The product of its (nonzero) digits is 25401600, while the sum is 61.

The spelling of 505697281873 in words is "five hundred five billion, six hundred ninety-seven million, two hundred eighty-one thousand, eight hundred seventy-three".