20675767177 has 16 divisors (see below), whose sum is σ = 23250786048. Its totient is φ = 18242579520.

The previous prime is 20675767157. The next prime is 20675767193. The reversal of 20675767177 is 77176757602.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20675767177 is a prime.

It is a super-3 number, since 3×20675767177³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20675767117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 410652 + ... + 458242.

It is an arithmetic number, because the mean of its divisors is an integer number (1453174128).

Almost surely, 2^20675767177 is an apocalyptic number.

It is an amenable number.

20675767177 is a deficient number, since it is larger than the sum of its proper divisors (2575018871).

20675767177 is a wasteful number, since it uses less digits than its factorization.

20675767177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49080.

The product of its (nonzero) digits is 6050520, while the sum is 55.

The spelling of 20675767177 in words is "twenty billion, six hundred seventy-five million, seven hundred sixty-seven thousand, one hundred seventy-seven".