20776343173 has 8 divisors (see below), whose sum is σ = 20885205920. Its totient is φ = 20667724560.

The previous prime is 20776343171. The next prime is 20776343197. The reversal of 20776343173 is 37134367702.

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 20776343173 - 2¹ = 20776343171 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20776343171) 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 7 ways as a sum of consecutive naturals, for example, 110878 + ... + 232048.

It is an arithmetic number, because the mean of its divisors is an integer number (2610650740).

Almost surely, 2^20776343173 is an apocalyptic number.

It is an amenable number.

20776343173 is a deficient number, since it is larger than the sum of its proper divisors (108862747).

20776343173 is a wasteful number, since it uses less digits than its factorization.

20776343173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122067.

The product of its (nonzero) digits is 444528, while the sum is 43.

The spelling of 20776343173 in words is "twenty billion, seven hundred seventy-six million, three hundred forty-three thousand, one hundred seventy-three".