145233461993 has 8 divisors (see below), whose sum is σ = 145847995656. Its totient is φ = 144619027200.

The previous prime is 145233461909. The next prime is 145233462013. The reversal of 145233461993 is 399164332541.

It can be written as a sum of positive squares in 4 ways, for example, as 70196912809 + 75036549184 = 264947^2 + 273928^2 .

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 145233461993 - 2¹⁶ = 145233396457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145233461903) 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, 5542703 + ... + 5568843.

It is an arithmetic number, because the mean of its divisors is an integer number (18230999457).

Almost surely, 2^145233461993 is an apocalyptic number.

It is an amenable number.

145233461993 is a deficient number, since it is larger than the sum of its proper divisors (614533663).

145233461993 is a wasteful number, since it uses less digits than its factorization.

145233461993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49435.

The product of its digits is 2099520, while the sum is 50.

The spelling of 145233461993 in words is "one hundred forty-five billion, two hundred thirty-three million, four hundred sixty-one thousand, nine hundred ninety-three".