145521021125152 has 12 divisors (see below), whose sum is σ = 286494510340206. Its totient is φ = 72760510562560.

The previous prime is 145521021125149. The next prime is 145521021125209. The reversal of 145521021125152 is 251521120125541.

It can be written as a sum of positive squares in only one way, i.e., 139147597735056 + 6373423390096 = 11796084^2 + 2524564^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2273765955049 + ... + 2273765955112.

Almost surely, 2^{145521021125152} is an apocalyptic number.

It is an amenable number.

145521021125152 is a deficient number, since it is larger than the sum of its proper divisors (140973489215054).

145521021125152 is an equidigital number, since it uses as much as digits as its factorization.

145521021125152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4547531910171 (or 4547531910163 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 37.

The spelling of 145521021125152 in words is "one hundred forty-five trillion, five hundred twenty-one billion, twenty-one million, one hundred twenty-five thousand, one hundred fifty-two".