145644734775229 has 4 divisors (see below), whose sum is σ = 153310247131840. Its totient is φ = 137979222418620.

The previous prime is 145644734775209. The next prime is 145644734775269. The reversal of 145644734775229 is 922577437446541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 145644734775229 - 2²⁷ = 145644600557501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145644734775209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3832756178277 + ... + 3832756178314.

It is an arithmetic number, because the mean of its divisors is an integer number (38327561782960).

Almost surely, 2^{145644734775229} is an apocalyptic number.

145644734775229 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

145644734775229 is a deficient number, since it is larger than the sum of its proper divisors (7665512356611).

145644734775229 is an equidigital number, since it uses as much as digits as its factorization.

145644734775229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7665512356610.

The product of its digits is 1422489600, while the sum is 70.

The spelling of 145644734775229 in words is "one hundred forty-five trillion, six hundred forty-four billion, seven hundred thirty-four million, seven hundred seventy-five thousand, two hundred twenty-nine".