145052261699550 has 48 divisors (see below), whose sum is σ = 359730847619760. Its totient is φ = 38680469936640.

The previous prime is 145052261699461. The next prime is 145052261699591. The reversal of 145052261699550 is 55996162250541.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46716294 + ... + 49724406.

It is an arithmetic number, because the mean of its divisors is an integer number (7494392658745).

Almost surely, 2^{145052261699550} is an apocalyptic number.

145052261699550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145052261699550 is an abundant number, since it is smaller than the sum of its proper divisors (214678585920210).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145052261699550 is a wasteful number, since it uses less digits than its factorization.

145052261699550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3329597 (or 3329592 counting only the distinct ones).

The product of its (nonzero) digits is 29160000, while the sum is 60.

The spelling of 145052261699550 in words is "one hundred forty-five trillion, fifty-two billion, two hundred sixty-one million, six hundred ninety-nine thousand, five hundred fifty".