20356400335 has 8 divisors (see below), whose sum is σ = 24495726240. Its totient is φ = 16239756384.

The previous prime is 20356400293. The next prime is 20356400417. The reversal of 20356400335 is 53300465302.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20356400335 is a prime.

It is a super-2 number, since 2×20356400335² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20356400297 and 20356400306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5668512 + ... + 5672101.

It is an arithmetic number, because the mean of its divisors is an integer number (3061965780).

Almost surely, 2^20356400335 is an apocalyptic number.

20356400335 is a deficient number, since it is larger than the sum of its proper divisors (4139325905).

20356400335 is a wasteful number, since it uses less digits than its factorization.

20356400335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11340977.

The product of its (nonzero) digits is 32400, while the sum is 31.

Adding to 20356400335 its reverse (53300465302), we get a palindrome (73656865637).

The spelling of 20356400335 in words is "twenty billion, three hundred fifty-six million, four hundred thousand, three hundred thirty-five".