155223035406 has 12 divisors (see below), whose sum is σ = 336316576752. Its totient is φ = 51741011796.

The previous prime is 155223035323. The next prime is 155223035431. The reversal of 155223035406 is 604530322551.

155223035406 is a `hidden beast` number, since 1 + 552 + 2 + 30 + 35 + 40 + 6 = 666.

It is a congruent 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 5 ways as a sum of consecutive naturals, for example, 4311750966 + ... + 4311751001.

It is an arithmetic number, because the mean of its divisors is an integer number (28026381396).

Almost surely, 2^155223035406 is an apocalyptic number.

155223035406 is an abundant number, since it is smaller than the sum of its proper divisors (181093541346).

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

155223035406 is a wasteful number, since it uses less digits than its factorization.

155223035406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8623501975 (or 8623501972 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

Adding to 155223035406 its reverse (604530322551), we get a palindrome (759753357957).

The spelling of 155223035406 in words is "one hundred fifty-five billion, two hundred twenty-three million, thirty-five thousand, four hundred six".