155040122653313 has 4 divisors (see below), whose sum is σ = 155135767394388. Its totient is φ = 154944477912240.

The previous prime is 155040122653259. The next prime is 155040122653357. The reversal of 155040122653313 is 313356221040551.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 110681698768369 + 44358423884944 = 10520537^2 + 6660212^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155040122653313 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (155040122653373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47822368106 + ... + 47822371347.

It is an arithmetic number, because the mean of its divisors is an integer number (38783941848597).

Almost surely, 2^{155040122653313} is an apocalyptic number.

It is an amenable number.

155040122653313 is a deficient number, since it is larger than the sum of its proper divisors (95644741075).

155040122653313 is an equidigital number, since it uses as much as digits as its factorization.

155040122653313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95644741074.

The product of its (nonzero) digits is 324000, while the sum is 41.

Adding to 155040122653313 its reverse (313356221040551), we get a palindrome (468396343693864).

The spelling of 155040122653313 in words is "one hundred fifty-five trillion, forty billion, one hundred twenty-two million, six hundred fifty-three thousand, three hundred thirteen".