20747878324177 has 8 divisors (see below), whose sum is σ = 21353117472000. Its totient is φ = 20144980527984.

The previous prime is 20747878324079. The next prime is 20747878324211. The reversal of 20747878324177 is 77142387874702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20747878324177 - 2³⁹ = 20198122510289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20747878024177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 585319927 + ... + 585355372.

It is an arithmetic number, because the mean of its divisors is an integer number (2669139684000).

Almost surely, 2^{20747878324177} is an apocalyptic number.

It is an amenable number.

20747878324177 is a deficient number, since it is larger than the sum of its proper divisors (605239147823).

20747878324177 is a wasteful number, since it uses less digits than its factorization.

20747878324177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170675815.

The product of its (nonzero) digits is 206524416, while the sum is 67.

The spelling of 20747878324177 in words is "twenty trillion, seven hundred forty-seven billion, eight hundred seventy-eight million, three hundred twenty-four thousand, one hundred seventy-seven".