155005436450 has 96 divisors (see below), whose sum is σ = 318867269760. Its totient is φ = 55794816000.

The previous prime is 155005436449. The next prime is 155005436471. The reversal of 155005436450 is 54634500551.

155005436450 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon 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 47 ways as a sum of consecutive naturals, for example, 2508425 + ... + 2569475.

It is an arithmetic number, because the mean of its divisors is an integer number (3321534060).

Almost surely, 2^155005436450 is an apocalyptic number.

155005436450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155005436450 is an abundant number, since it is smaller than the sum of its proper divisors (163861833310).

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

155005436450 is a wasteful number, since it uses less digits than its factorization.

155005436450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61212 (or 61207 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 38.

The spelling of 155005436450 in words is "one hundred fifty-five billion, five million, four hundred thirty-six thousand, four hundred fifty".