155142895009 has 8 divisors (see below), whose sum is σ = 158938746120. Its totient is φ = 151347609600.

The previous prime is 155142894989. The next prime is 155142895031. The reversal of 155142895009 is 900598241551.

155142895009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1089000000 + 154053895009 = 33000^2 + 392497^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155142895009 - 2¹³ = 155142886817 is a prime.

It is a super-2 number, since 2×155142895009² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155142895309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 442957 + ... + 711685.

It is an arithmetic number, because the mean of its divisors is an integer number (19867343265).

Almost surely, 2^155142895009 is an apocalyptic number.

It is an amenable number.

155142895009 is a deficient number, since it is larger than the sum of its proper divisors (3795851111).

155142895009 is a wasteful number, since it uses less digits than its factorization.

155142895009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282851.

The product of its (nonzero) digits is 648000, while the sum is 49.

The spelling of 155142895009 in words is "one hundred fifty-five billion, one hundred forty-two million, eight hundred ninety-five thousand, nine".