145204665556 has 18 divisors (see below), whose sum is σ = 256649069390. Its totient is φ = 71883477600.

The previous prime is 145204665481. The next prime is 145204665581. The reversal of 145204665556 is 655566402541.

It can be written as a sum of positive squares in 3 ways, for example, as 128784805956 + 16419859600 = 358866^2 + 128140^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1738491 + ... + 1820098.

Almost surely, 2^145204665556 is an apocalyptic number.

It is an amenable number.

145204665556 is a deficient number, since it is larger than the sum of its proper divisors (111444403834).

145204665556 is a wasteful number, since it uses less digits than its factorization.

145204665556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3558795 (or 3558692 counting only the distinct ones).

The product of its (nonzero) digits is 4320000, while the sum is 49.

The spelling of 145204665556 in words is "one hundred forty-five billion, two hundred four million, six hundred sixty-five thousand, five hundred fifty-six".