144919838621 has 2 divisors, whose sum is σ = 144919838622. Its totient is φ = 144919838620.

The previous prime is 144919838597. The next prime is 144919838639. The reversal of 144919838621 is 126838919441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142818991396 + 2100847225 = 377914^2 + 45835^2 .

It is a cyclic number.

It is not a de Polignac number, because 144919838621 - 2²² = 144915644317 is a prime.

It is a super-3 number, since 3×144919838621³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144919838521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72459919310 + 72459919311.

It is an arithmetic number, because the mean of its divisors is an integer number (72459919311).

Almost surely, 2^144919838621 is an apocalyptic number.

It is an amenable number.

144919838621 is a deficient number, since it is larger than the sum of its proper divisors (1).

144919838621 is an equidigital number, since it uses as much as digits as its factorization.

144919838621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2985984, while the sum is 56.

The spelling of 144919838621 in words is "one hundred forty-four billion, nine hundred nineteen million, eight hundred thirty-eight thousand, six hundred twenty-one".