155206643433 has 32 divisors (see below), whose sum is σ = 220344297600. Its totient is φ = 96898000896.

The previous prime is 155206643369. The next prime is 155206643461. The reversal of 155206643433 is 334346602551.

It is not a de Polignac number, because 155206643433 - 2⁶ = 155206643369 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (155206643233) 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, 4699783 + ... + 4732691.

It is an arithmetic number, because the mean of its divisors is an integer number (6885759300).

Almost surely, 2^155206643433 is an apocalyptic number.

It is an amenable number.

155206643433 is a deficient number, since it is larger than the sum of its proper divisors (65137654167).

155206643433 is a wasteful number, since it uses less digits than its factorization.

155206643433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33881.

The product of its (nonzero) digits is 777600, while the sum is 42.

The spelling of 155206643433 in words is "one hundred fifty-five billion, two hundred six million, six hundred forty-three thousand, four hundred thirty-three".