144815545381 has 32 divisors (see below), whose sum is σ = 168775342848. Its totient is φ = 123064550400.

The previous prime is 144815545379. The next prime is 144815545429. The reversal of 144815545381 is 183545518441.

It is a happy number.

It is not a de Polignac number, because 144815545381 - 2¹ = 144815545379 is a prime.

It is a super-2 number, since 2×144815545381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144815545331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1813560 + ... + 1891726.

It is an arithmetic number, because the mean of its divisors is an integer number (5274229464).

Almost surely, 2^144815545381 is an apocalyptic number.

It is an amenable number.

144815545381 is a deficient number, since it is larger than the sum of its proper divisors (23959797467).

144815545381 is a wasteful number, since it uses less digits than its factorization.

144815545381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78381.

The product of its digits is 1536000, while the sum is 49.

The spelling of 144815545381 in words is "one hundred forty-four billion, eight hundred fifteen million, five hundred forty-five thousand, three hundred eighty-one".