20335201391 has 8 divisors (see below), whose sum is σ = 20467792800. Its totient is φ = 20202739168.

The previous prime is 20335201363. The next prime is 20335201417. The reversal of 20335201391 is 19310253302.

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 20335201391 - 2²² = 20331007087 is a prime.

It is a super-2 number, since 2×20335201391² (a number of 21 digits) contains 22 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 (20335201891) 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 7 ways as a sum of consecutive naturals, for example, 294245 + ... + 356721.

It is an arithmetic number, because the mean of its divisors is an integer number (2558474100).

Almost surely, 2^20335201391 is an apocalyptic number.

20335201391 is a deficient number, since it is larger than the sum of its proper divisors (132591409).

20335201391 is a wasteful number, since it uses less digits than its factorization.

20335201391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64593.

The product of its (nonzero) digits is 4860, while the sum is 29.

Adding to 20335201391 its reverse (19310253302), we get a palindrome (39645454693).

The spelling of 20335201391 in words is "twenty billion, three hundred thirty-five million, two hundred one thousand, three hundred ninety-one".