20065893777 has 8 divisors (see below), whose sum is σ = 29727250080. Its totient is φ = 13377262500.

The previous prime is 20065893737. The next prime is 20065893779. The reversal of 20065893777 is 77739856002.

20065893777 is a `hidden beast` number, since 20 + 0 + 6 + 589 + 37 + 7 + 7 = 666.

It is not a de Polignac number, because 20065893777 - 2¹⁶ = 20065828241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20065893779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371590599 + ... + 371590652.

It is an arithmetic number, because the mean of its divisors is an integer number (3715906260).

Almost surely, 2^20065893777 is an apocalyptic number.

20065893777 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20065893777 is a deficient number, since it is larger than the sum of its proper divisors (9661356303).

20065893777 is an equidigital number, since it uses as much as digits as its factorization.

20065893777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743181260 (or 743181254 counting only the distinct ones).

The product of its (nonzero) digits is 4445280, while the sum is 54.

The spelling of 20065893777 in words is "twenty billion, sixty-five million, eight hundred ninety-three thousand, seven hundred seventy-seven".