149255717522 has 6 divisors (see below), whose sum is σ = 223884395829. Its totient is φ = 74627585580.

The previous prime is 149255717519. The next prime is 149255717593. The reversal of 149255717522 is 225717552941.

It can be written as a sum of positive squares in 2 ways, for example, as 142642937761 + 6612779761 = 377681^2 + 81319^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=273181.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 409772 + ... + 682952.

Almost surely, 2^149255717522 is an apocalyptic number.

149255717522 is a deficient number, since it is larger than the sum of its proper divisors (74628678307).

149255717522 is an frugal number, since it uses more digits than its factorization.

149255717522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546364 (or 273183 counting only the distinct ones).

The product of its digits is 1764000, while the sum is 50.

Multiplying 149255717522 by its sum of digits (50), we get a square (7462785876100 = 2731810²).

The spelling of 149255717522 in words is "one hundred forty-nine billion, two hundred fifty-five million, seven hundred seventeen thousand, five hundred twenty-two".