20330376777 has 12 divisors (see below), whose sum is σ = 29378035440. Its totient is φ = 13548075768.

The previous prime is 20330376769. The next prime is 20330376779. The reversal of 20330376777 is 77767303302.

It is a happy number.

20330376777 is a `hidden beast` number, since 203 + 3 + 0 + 376 + 7 + 77 = 666.

It is not a de Polignac number, because 20330376777 - 2³ = 20330376769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20330376779) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 435627 + ... + 480032.

It is an arithmetic number, because the mean of its divisors is an integer number (2448169620).

Almost surely, 2^20330376777 is an apocalyptic number.

It is an amenable number.

20330376777 is a deficient number, since it is larger than the sum of its proper divisors (9047658663).

20330376777 is a wasteful number, since it uses less digits than its factorization.

20330376777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918132 (or 918129 counting only the distinct ones).

The product of its (nonzero) digits is 777924, while the sum is 45.

The spelling of 20330376777 in words is "twenty billion, three hundred thirty million, three hundred seventy-six thousand, seven hundred seventy-seven".