145218856538 has 8 divisors (see below), whose sum is σ = 248946611232. Its totient is φ = 62236652796.

The previous prime is 145218856493. The next prime is 145218856579. The reversal of 145218856538 is 835658812541.

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5186387720 + ... + 5186387747.

It is an arithmetic number, because the mean of its divisors is an integer number (31118326404).

Almost surely, 2^145218856538 is an apocalyptic number.

145218856538 is a deficient number, since it is larger than the sum of its proper divisors (103727754694).

145218856538 is a wasteful number, since it uses less digits than its factorization.

145218856538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10372775476.

The product of its digits is 9216000, while the sum is 56.

The spelling of 145218856538 in words is "one hundred forty-five billion, two hundred eighteen million, eight hundred fifty-six thousand, five hundred thirty-eight".