203604055345 has 4 divisors (see below), whose sum is σ = 244324866420. Its totient is φ = 162883244272.

The previous prime is 203604055337. The next prime is 203604055349. The reversal of 203604055345 is 543550406302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 543550406302 = 2 ⋅271775203151.

It can be written as a sum of positive squares in 2 ways, for example, as 114246704016 + 89357351329 = 338004^2 + 298927^2 .

It is a cyclic number.

It is not a de Polignac number, because 203604055345 - 2³ = 203604055337 is a prime.

It is a super-2 number, since 2×203604055345² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (203604055349) 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, 20360405530 + ... + 20360405539.

It is an arithmetic number, because the mean of its divisors is an integer number (61081216605).

Almost surely, 2^203604055345 is an apocalyptic number.

It is an amenable number.

203604055345 is a deficient number, since it is larger than the sum of its proper divisors (40720811075).

203604055345 is an equidigital number, since it uses as much as digits as its factorization.

203604055345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40720811074.

The product of its (nonzero) digits is 216000, while the sum is 37.

The spelling of 203604055345 in words is "two hundred three billion, six hundred four million, fifty-five thousand, three hundred forty-five".