20338499377 has 16 divisors (see below), whose sum is σ = 23492165632. Its totient is φ = 17247200400.

The previous prime is 20338499341. The next prime is 20338499383. The reversal of 20338499377 is 77399483302.

It is a cyclic number.

It is not a de Polignac number, because 20338499377 - 2²³ = 20330110769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20338499477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 770752 + ... + 796702.

It is an arithmetic number, because the mean of its divisors is an integer number (1468260352).

Almost surely, 2^20338499377 is an apocalyptic number.

It is an amenable number.

20338499377 is a deficient number, since it is larger than the sum of its proper divisors (3153666255).

20338499377 is a wasteful number, since it uses less digits than its factorization.

20338499377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27148.

The product of its (nonzero) digits is 6858432, while the sum is 55.

The spelling of 20338499377 in words is "twenty billion, three hundred thirty-eight million, four hundred ninety-nine thousand, three hundred seventy-seven".