200454257645 has 6 divisors (see below), whose sum is σ = 240546310542. Its totient is φ = 160362605208.

The previous prime is 200454257629. The next prime is 200454257659. The reversal of 200454257645 is 546752454002.

It can be written as a sum of positive squares in only one way, i.e., 160363406116 + 40090851529 = 400454^2 + 200227^2 .

It is not a de Polignac number, because 200454257645 - 2⁴ = 200454257629 is a prime.

It is a super-3 number, since 3×200454257645³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 200454257596 and 200454257605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 901022 + ... + 1101248.

It is an arithmetic number, because the mean of its divisors is an integer number (40091051757).

Almost surely, 2^200454257645 is an apocalyptic number.

It is an amenable number.

200454257645 is a deficient number, since it is larger than the sum of its proper divisors (40092052897).

200454257645 is an frugal number, since it uses more digits than its factorization.

200454257645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400459 (or 200232 counting only the distinct ones).

The product of its (nonzero) digits is 1344000, while the sum is 44.

The spelling of 200454257645 in words is "two hundred billion, four hundred fifty-four million, two hundred fifty-seven thousand, six hundred forty-five".