20386446575 has 12 divisors (see below), whose sum is σ = 27577302648. Its totient is φ = 14826506400.

The previous prime is 20386446559. The next prime is 20386446581. The reversal of 20386446575 is 57564468302.

It is a happy number.

It is not a de Polignac number, because 20386446575 - 2⁴ = 20386446559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37065992 + ... + 37066541.

It is an arithmetic number, because the mean of its divisors is an integer number (2298108554).

Almost surely, 2^20386446575 is an apocalyptic number.

20386446575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20386446575 is a deficient number, since it is larger than the sum of its proper divisors (7190856073).

20386446575 is a wasteful number, since it uses less digits than its factorization.

20386446575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74132554 (or 74132549 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 50.

The spelling of 20386446575 in words is "twenty billion, three hundred eighty-six million, four hundred forty-six thousand, five hundred seventy-five".