155013546520403 has 2 divisors, whose sum is σ = 155013546520404. Its totient is φ = 155013546520402.

The previous prime is 155013546520387. The next prime is 155013546520463. The reversal of 155013546520403 is 304025645310551.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155013546520403 - 2⁴ = 155013546520387 is a prime.

It is a super-3 number, since 3×155013546520403³ (a number of 44 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (155013546520463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77506773260201 + 77506773260202.

It is an arithmetic number, because the mean of its divisors is an integer number (77506773260202).

Almost surely, 2^{155013546520403} is an apocalyptic number.

155013546520403 is a deficient number, since it is larger than the sum of its proper divisors (1).

155013546520403 is an equidigital number, since it uses as much as digits as its factorization.

155013546520403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080000, while the sum is 44.

The spelling of 155013546520403 in words is "one hundred fifty-five trillion, thirteen billion, five hundred forty-six million, five hundred twenty thousand, four hundred three".