20122797389 has 8 divisors (see below), whose sum is σ = 20490615360. Its totient is φ = 19758308416.

The previous prime is 20122797379. The next prime is 20122797391. The reversal of 20122797389 is 98379722102.

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

It is a de Polignac number, because none of the positive numbers 2^k-20122797389 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 (20122797329) 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, 820049 + ... + 844230.

It is an arithmetic number, because the mean of its divisors is an integer number (2561326920).

Almost surely, 2^20122797389 is an apocalyptic number.

It is an amenable number.

20122797389 is a deficient number, since it is larger than the sum of its proper divisors (367817971).

20122797389 is a wasteful number, since it uses less digits than its factorization.

20122797389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664499.

The product of its (nonzero) digits is 762048, while the sum is 50.

The spelling of 20122797389 in words is "twenty billion, one hundred twenty-two million, seven hundred ninety-seven thousand, three hundred eighty-nine".