505445451435231 has 16 divisors (see below), whose sum is σ = 713570616140544. Its totient is φ = 317141992013184.

The previous prime is 505445451435179. The next prime is 505445451435233. The reversal of 505445451435231 is 132534154544505.

It is not a de Polignac number, because 505445451435231 - 2¹¹ = 505445451433183 is a prime.

It is a super-2 number, since 2×505445451435231² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505445451435233) 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, 77032836 + ... + 83336358.

It is an arithmetic number, because the mean of its divisors is an integer number (44598163508784).

Almost surely, 2^{505445451435231} is an apocalyptic number.

505445451435231 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

505445451435231 is a deficient number, since it is larger than the sum of its proper divisors (208125164705313).

505445451435231 is a wasteful number, since it uses less digits than its factorization.

505445451435231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7875790.

The product of its (nonzero) digits is 14400000, while the sum is 51.

The spelling of 505445451435231 in words is "five hundred five trillion, four hundred forty-five billion, four hundred fifty-one million, four hundred thirty-five thousand, two hundred thirty-one".