2066451531 has 4 divisors (see below), whose sum is σ = 2755268712. Its totient is φ = 1377634352.

The previous prime is 2066451529. The next prime is 2066451547. The reversal of 2066451531 is 1351546602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2066451531 - 2¹ = 2066451529 is a prime.

It is a super-2 number, since 2×2066451531² = 8540443859944487922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2066451492 and 2066451501.

It is not an unprimeable number, because it can be changed into a prime (2066451551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344408586 + ... + 344408591.

It is an arithmetic number, because the mean of its divisors is an integer number (688817178).

Almost surely, 2^2066451531 is an apocalyptic number.

2066451531 is a deficient number, since it is larger than the sum of its proper divisors (688817181).

2066451531 is an equidigital number, since it uses as much as digits as its factorization.

2066451531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688817180.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 2066451531 is about 45458.2394181737. The cubic root of 2066451531 is about 1273.7232444815.

The spelling of 2066451531 in words is "two billion, sixty-six million, four hundred fifty-one thousand, five hundred thirty-one".