1054020203505 has 40 divisors (see below), whose sum is σ = 1908907527912. Its totient is φ = 556348787712.

The previous prime is 1054020203491. The next prime is 1054020203527. The reversal of 1054020203505 is 5053020204501.

It is a happy number.

1054020203505 is a `hidden beast` number, since 1 + 0 + 5 + 402 + 0 + 203 + 50 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 68799191616 + 985221011889 = 262296^2 + 992583^2 .

It is not a de Polignac number, because 1054020203505 - 2²² = 1054016009201 is a prime.

It is a super-2 number, since 2×1054020203505² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 13375762 + ... + 13454331.

Almost surely, 2^{1054020203505} is an apocalyptic number.

1054020203505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1054020203505 is a deficient number, since it is larger than the sum of its proper divisors (854887324407).

1054020203505 is an equidigital number, since it uses as much as digits as its factorization.

1054020203505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26830207 (or 26830198 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The spelling of 1054020203505 in words is "one trillion, fifty-four billion, twenty million, two hundred three thousand, five hundred five".