20282507775 has 18 divisors (see below), whose sum is σ = 36328225440. Its totient is φ = 10817337360.

The previous prime is 20282507759. The next prime is 20282507801. The reversal of 20282507775 is 57770528202.

It is not a de Polignac number, because 20282507775 - 2⁴ = 20282507759 is a prime.

It is a super-2 number, since 2×20282507775² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 20282507775.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 45072015 + ... + 45072464.

Almost surely, 2^20282507775 is an apocalyptic number.

20282507775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20282507775 is a deficient number, since it is larger than the sum of its proper divisors (16045717665).

20282507775 is a wasteful number, since it uses less digits than its factorization.

20282507775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90144495 (or 90144487 counting only the distinct ones).

The product of its (nonzero) digits is 548800, while the sum is 45.

The spelling of 20282507775 in words is "twenty billion, two hundred eighty-two million, five hundred seven thousand, seven hundred seventy-five".