155420563303 has 16 divisors (see below), whose sum is σ = 157326281856. Its totient is φ = 153524014560.

The previous prime is 155420563289. The next prime is 155420563339. The reversal of 155420563303 is 303365024551.

It is a cyclic number.

It is not a de Polignac number, because 155420563303 - 2⁵ = 155420563271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155420563393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90202600 + ... + 90204322.

It is an arithmetic number, because the mean of its divisors is an integer number (9832892616).

Almost surely, 2^155420563303 is an apocalyptic number.

155420563303 is a deficient number, since it is larger than the sum of its proper divisors (1905718553).

155420563303 is a wasteful number, since it uses less digits than its factorization.

155420563303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3774.

The product of its (nonzero) digits is 162000, while the sum is 37.

Adding to 155420563303 its reverse (303365024551), we get a palindrome (458785587854).

The spelling of 155420563303 in words is "one hundred fifty-five billion, four hundred twenty million, five hundred sixty-three thousand, three hundred three".