155025517643473 has 4 divisors (see below), whose sum is σ = 159215396498740. Its totient is φ = 150835638788208.

The previous prime is 155025517643389. The next prime is 155025517643519. The reversal of 155025517643473 is 374346715520551.

155025517643473 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 128606668078144 + 26418849565329 = 11340488^2 + 5139927^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155025517643473 is a prime.

It is a super-2 number, since 2×155025517643473² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155025517043473) 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, 2094939427578 + ... + 2094939427651.

It is an arithmetic number, because the mean of its divisors is an integer number (39803849124685).

Almost surely, 2^{155025517643473} is an apocalyptic number.

It is an amenable number.

155025517643473 is a deficient number, since it is larger than the sum of its proper divisors (4189878855267).

155025517643473 is an equidigital number, since it uses as much as digits as its factorization.

155025517643473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4189878855266.

The product of its (nonzero) digits is 52920000, while the sum is 58.

The spelling of 155025517643473 in words is "one hundred fifty-five trillion, twenty-five billion, five hundred seventeen million, six hundred forty-three thousand, four hundred seventy-three".