20335004001 has 48 divisors (see below), whose sum is σ = 32742341632. Its totient is φ = 12076905600.

The previous prime is 20335003979. The next prime is 20335004009. The reversal of 20335004001 is 10040053302.

It is not a de Polignac number, because 20335004001 - 2⁷ = 20335003873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20335004009) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1345356 + ... + 1360386.

Almost surely, 2^20335004001 is an apocalyptic number.

It is an amenable number.

20335004001 is a deficient number, since it is larger than the sum of its proper divisors (12407337631).

20335004001 is a wasteful number, since it uses less digits than its factorization.

20335004001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15454 (or 15451 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

Adding to 20335004001 its reverse (10040053302), we get a palindrome (30375057303).

The spelling of 20335004001 in words is "twenty billion, three hundred thirty-five million, four thousand, one".