505006163531 has 8 divisors (see below), whose sum is σ = 522494809200. Its totient is φ = 487522493920.

The previous prime is 505006163527. The next prime is 505006163581. The reversal of 505006163531 is 135361600505.

It is a happy number.

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

It is not a de Polignac number, because 505006163531 - 2² = 505006163527 is a prime.

It is a super-2 number, since 2×505006163531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 505006163491 and 505006163500.

It is not an unprimeable number, because it can be changed into a prime (505006163581) 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, 1036940 + ... + 1444041.

It is an arithmetic number, because the mean of its divisors is an integer number (65311851150).

Almost surely, 2^505006163531 is an apocalyptic number.

505006163531 is a deficient number, since it is larger than the sum of its proper divisors (17488645669).

505006163531 is a wasteful number, since it uses less digits than its factorization.

505006163531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2488029.

The product of its (nonzero) digits is 40500, while the sum is 35.

The spelling of 505006163531 in words is "five hundred five billion, six million, one hundred sixty-three thousand, five hundred thirty-one".