20767310773 has 4 divisors (see below), whose sum is σ = 22655248128. Its totient is φ = 18879373420.

The previous prime is 20767310771. The next prime is 20767310779. The reversal of 20767310773 is 37701376702.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20767310773 - 2¹ = 20767310771 is a prime.

It is a super-4 number, since 4×20767310773⁴ (a number of 42 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20767310771) 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 3 ways as a sum of consecutive naturals, for example, 943968661 + ... + 943968682.

It is an arithmetic number, because the mean of its divisors is an integer number (5663812032).

Almost surely, 2^20767310773 is an apocalyptic number.

It is an amenable number.

20767310773 is a deficient number, since it is larger than the sum of its proper divisors (1887937355).

20767310773 is a wasteful number, since it uses less digits than its factorization.

20767310773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1887937354.

The product of its (nonzero) digits is 259308, while the sum is 43.

The spelling of 20767310773 in words is "twenty billion, seven hundred sixty-seven million, three hundred ten thousand, seven hundred seventy-three".