531314545145 has 16 divisors (see below), whose sum is σ = 653783468688. Its totient is φ = 414268431360.

The previous prime is 531314545123. The next prime is 531314545199. The reversal of 531314545145 is 541545413135.

It can be written as a sum of positive squares in 8 ways, for example, as 8579761129 + 522734784016 = 92627^2 + 723004^2 .

It is not a de Polignac number, because 531314545145 - 2¹² = 531314541049 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1095404 + ... + 1504173.

It is an arithmetic number, because the mean of its divisors is an integer number (40861466793).

Almost surely, 2^531314545145 is an apocalyptic number.

It is an amenable number.

531314545145 is a deficient number, since it is larger than the sum of its proper divisors (122468923543).

531314545145 is a wasteful number, since it uses less digits than its factorization.

531314545145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2600620.

The product of its digits is 360000, while the sum is 41.

The spelling of 531314545145 in words is "five hundred thirty-one billion, three hundred fourteen million, five hundred forty-five thousand, one hundred forty-five".