2145533163531 has 8 divisors (see below), whose sum is σ = 2860717656720. Its totient is φ = 1430352056352.

The previous prime is 2145533163523. The next prime is 2145533163583. The reversal of 2145533163531 is 1353613355412.

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

It is not a de Polignac number, because 2145533163531 - 2³ = 2145533163523 is a prime.

It is a super-2 number, since 2×2145533163531² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2145533163931) 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, 1985941 + ... + 2869673.

It is an arithmetic number, because the mean of its divisors is an integer number (357589707090).

Almost surely, 2^{2145533163531} is an apocalyptic number.

2145533163531 is a deficient number, since it is larger than the sum of its proper divisors (715184493189).

2145533163531 is an equidigital number, since it uses as much as digits as its factorization.

2145533163531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1693005.

The product of its digits is 486000, while the sum is 42.

The spelling of 2145533163531 in words is "two trillion, one hundred forty-five billion, five hundred thirty-three million, one hundred sixty-three thousand, five hundred thirty-one".