20458394365 has 16 divisors (see below), whose sum is σ = 24690191616. Its totient is φ = 16273454400.

The previous prime is 20458394353. The next prime is 20458394377. The reversal of 20458394365 is 56349385402.

It is an interprime number because it is at equal distance from previous prime (20458394353) and next prime (20458394377).

It is not a de Polignac number, because 20458394365 - 2⁷ = 20458394237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1154875 + ... + 1172455.

It is an arithmetic number, because the mean of its divisors is an integer number (1543136976).

Almost surely, 2^20458394365 is an apocalyptic number.

It is an amenable number.

20458394365 is a deficient number, since it is larger than the sum of its proper divisors (4231797251).

20458394365 is a wasteful number, since it uses less digits than its factorization.

20458394365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18900.

The product of its (nonzero) digits is 3110400, while the sum is 49.

The spelling of 20458394365 in words is "twenty billion, four hundred fifty-eight million, three hundred ninety-four thousand, three hundred sixty-five".