145705468637 has 4 divisors (see below), whose sum is σ = 145860971676. Its totient is φ = 145549965600.

The previous prime is 145705468631. The next prime is 145705468651. The reversal of 145705468637 is 736864507541.

It is a happy number.

145705468637 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 60899874841 + 84805593796 = 246779^2 + 291214^2 .

It is a cyclic number.

It is not a de Polignac number, because 145705468637 - 2¹⁶ = 145705403101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145705468631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77750114 + ... + 77751987.

It is an arithmetic number, because the mean of its divisors is an integer number (36465242919).

Almost surely, 2^145705468637 is an apocalyptic number.

It is an amenable number.

145705468637 is a deficient number, since it is larger than the sum of its proper divisors (155503039).

145705468637 is an equidigital number, since it uses as much as digits as its factorization.

145705468637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155503038.

The product of its (nonzero) digits is 16934400, while the sum is 56.

The spelling of 145705468637 in words is "one hundred forty-five billion, seven hundred five million, four hundred sixty-eight thousand, six hundred thirty-seven".