155209060838 has 64 divisors (see below), whose sum is σ = 263995200000. Its totient is φ = 67938324480.

The previous prime is 155209060837. The next prime is 155209060843. The reversal of 155209060838 is 838060902551.

It is a junction number, because it is equal to n+sod(n) for n = 155209060792 and 155209060801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155209060837) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 53353328 + ... + 53356236.

It is an arithmetic number, because the mean of its divisors is an integer number (4124925000).

Almost surely, 2^155209060838 is an apocalyptic number.

155209060838 is a deficient number, since it is larger than the sum of its proper divisors (108786139162).

155209060838 is a wasteful number, since it uses less digits than its factorization.

155209060838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4257.

The product of its (nonzero) digits is 518400, while the sum is 47.

The spelling of 155209060838 in words is "one hundred fifty-five billion, two hundred nine million, sixty thousand, eight hundred thirty-eight".