155244420512 has 24 divisors (see below), whose sum is σ = 323616127716. Its totient is φ = 73056197632.

The previous prime is 155244420509. The next prime is 155244420553. The reversal of 155244420512 is 215024442551.

It can be written as a sum of positive squares in 2 ways, for example, as 149394618256 + 5849802256 = 386516^2 + 76484^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142687343 + ... + 142688430.

Almost surely, 2^155244420512 is an apocalyptic number.

It is an amenable number.

155244420512 is an abundant number, since it is smaller than the sum of its proper divisors (168371707204).

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

155244420512 is a wasteful number, since it uses less digits than its factorization.

155244420512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285375800 (or 285375792 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 35.

The spelling of 155244420512 in words is "one hundred fifty-five billion, two hundred forty-four million, four hundred twenty thousand, five hundred twelve".