155205391208 has 16 divisors (see below), whose sum is σ = 332582981280. Its totient is φ = 66516596208.

The previous prime is 155205391087. The next prime is 155205391217. The reversal of 155205391208 is 802193502551.

It is a happy number.

It is a super-3 number, since 3×155205391208³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1385762366 + ... + 1385762477.

It is an arithmetic number, because the mean of its divisors is an integer number (20786436330).

Almost surely, 2^155205391208 is an apocalyptic number.

It is an amenable number.

155205391208 is an abundant number, since it is smaller than the sum of its proper divisors (177377590072).

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

155205391208 is a wasteful number, since it uses less digits than its factorization.

155205391208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2771524856 (or 2771524852 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 41.

Adding to 155205391208 its reverse (802193502551), we get a palindrome (957398893759).

The spelling of 155205391208 in words is "one hundred fifty-five billion, two hundred five million, three hundred ninety-one thousand, two hundred eight".