10200985565450 has 12 divisors (see below), whose sum is σ = 18973833151830. Its totient is φ = 4080394226160.

The previous prime is 10200985565447. The next prime is 10200985565471. The reversal of 10200985565450 is 5456558900201.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 8376781467289 + 1824204098161 = 2894267^2 + 1350631^2 .

It is a Harshad number since it is a multiple of its sum of digits (50), and also a Moran number because the ratio is a prime number: 204019711309 = 10200985565450 / (1 + 0 + 2 + 0 + 0 + 9 + 8 + 5 + 5 + 6 + 5 + 4 + 5 + 0).

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, 102009855605 + ... + 102009855704.

Almost surely, 2^{10200985565450} is an apocalyptic number.

10200985565450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10200985565450 is a deficient number, since it is larger than the sum of its proper divisors (8772847586380).

10200985565450 is a wasteful number, since it uses less digits than its factorization.

10200985565450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204019711321 (or 204019711316 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 50.

The spelling of 10200985565450 in words is "ten trillion, two hundred billion, nine hundred eighty-five million, five hundred sixty-five thousand, four hundred fifty".