20426251245 has 16 divisors (see below), whose sum is σ = 34402107840. Its totient is φ = 10320632064.

The previous prime is 20426251243. The next prime is 20426251301. The reversal of 20426251245 is 54215262402.

It is not a de Polignac number, because 20426251245 - 2¹ = 20426251243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20426251243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35835244 + ... + 35835813.

It is an arithmetic number, because the mean of its divisors is an integer number (2150131740).

Almost surely, 2^20426251245 is an apocalyptic number.

It is an amenable number.

20426251245 is a deficient number, since it is larger than the sum of its proper divisors (13975856595).

20426251245 is a wasteful number, since it uses less digits than its factorization.

20426251245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71671084.

The product of its (nonzero) digits is 38400, while the sum is 33.

The spelling of 20426251245 in words is "twenty billion, four hundred twenty-six million, two hundred fifty-one thousand, two hundred forty-five".