145666454531 has 8 divisors (see below), whose sum is σ = 157083852240. Its totient is φ = 134279383392.

The previous prime is 145666454501. The next prime is 145666454537. The reversal of 145666454531 is 135454666541.

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

It is a cyclic number.

It is not a de Polignac number, because 145666454531 - 2⁶ = 145666454467 is a prime.

It is a super-2 number, since 2×145666454531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145666454531.

It is not an unprimeable number, because it can be changed into a prime (145666454537) 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 7 ways as a sum of consecutive naturals, for example, 7571660 + ... + 7590873.

It is an arithmetic number, because the mean of its divisors is an integer number (19635481530).

Almost surely, 2^145666454531 is an apocalyptic number.

145666454531 is a deficient number, since it is larger than the sum of its proper divisors (11417397709).

145666454531 is a wasteful number, since it uses less digits than its factorization.

145666454531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15163285.

The product of its digits is 5184000, while the sum is 50.

The spelling of 145666454531 in words is "one hundred forty-five billion, six hundred sixty-six million, four hundred fifty-four thousand, five hundred thirty-one".