145251729141122 has 18 divisors (see below), whose sum is σ = 219609946482723. Its totient is φ = 72052933587012.

The previous prime is 145251729141059. The next prime is 145251729141133. The reversal of 145251729141122 is 221141927152541.

It can be written as a sum of positive squares in only one way, i.e., 72625864570561 + 72625864570561 = 8522081^2 + 8522081^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=8522081.

It is a Duffinian number.

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 8 ways as a sum of consecutive naturals, for example, 2164575023 + ... + 2164642125.

Almost surely, 2^{145251729141122} is an apocalyptic number.

145251729141122 is a deficient number, since it is larger than the sum of its proper divisors (74358217341601).

145251729141122 is an frugal number, since it uses more digits than its factorization.

145251729141122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134462 (or 67232 counting only the distinct ones).

The product of its digits is 403200, while the sum is 47.

The spelling of 145251729141122 in words is "one hundred forty-five trillion, two hundred fifty-one billion, seven hundred twenty-nine million, one hundred forty-one thousand, one hundred twenty-two".