20426235401 has 24 divisors (see below), whose sum is σ = 24125137344. Its totient is φ = 17050033440.

The previous prime is 20426235397. The next prime is 20426235419. The reversal of 20426235401 is 10453262402.

It is not a de Polignac number, because 20426235401 - 2² = 20426235397 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20426235421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5661140 + ... + 5664746.

It is an arithmetic number, because the mean of its divisors is an integer number (1005214056).

Almost surely, 2^20426235401 is an apocalyptic number.

It is an amenable number.

20426235401 is a deficient number, since it is larger than the sum of its proper divisors (3698901943).

20426235401 is a wasteful number, since it uses less digits than its factorization.

20426235401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4029 (or 3830 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 20426235401 its reverse (10453262402), we get a palindrome (30879497803).

The spelling of 20426235401 in words is "twenty billion, four hundred twenty-six million, two hundred thirty-five thousand, four hundred one".