145218924249 has 32 divisors (see below), whose sum is σ = 224143749120. Its totient is φ = 81911112192.

The previous prime is 145218924247. The next prime is 145218924251. The reversal of 145218924249 is 942429812541.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (145218924247) and next prime (145218924251).

It is not a de Polignac number, because 145218924249 - 2¹ = 145218924247 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (145218924247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8540334 + ... + 8557320.

It is an arithmetic number, because the mean of its divisors is an integer number (7004492160).

Almost surely, 2^145218924249 is an apocalyptic number.

It is an amenable number.

145218924249 is a deficient number, since it is larger than the sum of its proper divisors (78924824871).

145218924249 is a wasteful number, since it uses less digits than its factorization.

145218924249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22229.

The product of its digits is 1658880, while the sum is 51.

The spelling of 145218924249 in words is "one hundred forty-five billion, two hundred eighteen million, nine hundred twenty-four thousand, two hundred forty-nine".