20778867174063 has 8 divisors (see below), whose sum is σ = 28598870949376. Its totient is φ = 13405720757400.

The previous prime is 20778867174061. The next prime is 20778867174067. The reversal of 20778867174063 is 36047176887702.

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

It is not a de Polignac number, because 20778867174063 - 2¹ = 20778867174061 is a prime.

It is a super-2 number, since 2×20778867174063² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20778867173985 and 20778867174003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20778867174061) 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, 111714339553 + ... + 111714339738.

It is an arithmetic number, because the mean of its divisors is an integer number (3574858868672).

Almost surely, 2^{20778867174063} is an apocalyptic number.

20778867174063 is a deficient number, since it is larger than the sum of its proper divisors (7820003775313).

20778867174063 is a wasteful number, since it uses less digits than its factorization.

20778867174063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223428679325.

The product of its (nonzero) digits is 132765696, while the sum is 66.

The spelling of 20778867174063 in words is "twenty trillion, seven hundred seventy-eight billion, eight hundred sixty-seven million, one hundred seventy-four thousand, sixty-three".