20297402773 has 8 divisors (see below), whose sum is σ = 21495500928. Its totient is φ = 19099763904.

The previous prime is 20297402759. The next prime is 20297402791. The reversal of 20297402773 is 37720479202.

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 20297402773 - 2²¹ = 20295305621 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 (20297442773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21661 + ... + 202642.

It is an arithmetic number, because the mean of its divisors is an integer number (2686937616).

Almost surely, 2^20297402773 is an apocalyptic number.

It is an amenable number.

20297402773 is a deficient number, since it is larger than the sum of its proper divisors (1198098155).

20297402773 is a wasteful number, since it uses less digits than its factorization.

20297402773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229643.

The product of its (nonzero) digits is 296352, while the sum is 43.

The spelling of 20297402773 in words is "twenty billion, two hundred ninety-seven million, four hundred two thousand, seven hundred seventy-three".