20273020769 has 4 divisors (see below), whose sum is σ = 20273311920. Its totient is φ = 20272729620.

The previous prime is 20273020759. The next prime is 20273020787. The reversal of 20273020769 is 96702037202.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 96702037202 = 2 ⋅48351018601.

It is a cyclic number.

It is not a de Polignac number, because 20273020769 - 2⁴ = 20273020753 is a prime.

It is a super-2 number, since 2×20273020769² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20273020759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27314 + ... + 203204.

It is an arithmetic number, because the mean of its divisors is an integer number (5068327980).

Almost surely, 2^20273020769 is an apocalyptic number.

It is an amenable number.

20273020769 is a deficient number, since it is larger than the sum of its proper divisors (291151).

20273020769 is a wasteful number, since it uses less digits than its factorization.

20273020769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291150.

The product of its (nonzero) digits is 63504, while the sum is 38.

The spelling of 20273020769 in words is "twenty billion, two hundred seventy-three million, twenty thousand, seven hundred sixty-nine".