20938441775 has 6 divisors (see below), whose sum is σ = 25963667832. Its totient is φ = 16750753400.

The previous prime is 20938441753. The next prime is 20938441847. The reversal of 20938441775 is 57714483902.

It is not a de Polignac number, because 20938441775 - 2¹² = 20938437679 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 5 ways as a sum of consecutive naturals, for example, 418768811 + ... + 418768860.

It is an arithmetic number, because the mean of its divisors is an integer number (4327277972).

Almost surely, 2^20938441775 is an apocalyptic number.

20938441775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20938441775 is a deficient number, since it is larger than the sum of its proper divisors (5025226057).

20938441775 is an equidigital number, since it uses as much as digits as its factorization.

20938441775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837537681 (or 837537676 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 50.

The spelling of 20938441775 in words is "twenty billion, nine hundred thirty-eight million, four hundred forty-one thousand, seven hundred seventy-five".