20430552401 has 12 divisors (see below), whose sum is σ = 24799465152. Its totient is φ = 16750514088.

The previous prime is 20430552377. The next prime is 20430552463. The reversal of 20430552401 is 10425503402.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-20430552401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20430552491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9063005 + ... + 9065258.

It is an arithmetic number, because the mean of its divisors is an integer number (2066622096).

Almost surely, 2^20430552401 is an apocalyptic number.

It is an amenable number.

20430552401 is a deficient number, since it is larger than the sum of its proper divisors (4368912751).

20430552401 is a wasteful number, since it uses less digits than its factorization.

20430552401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18128300 (or 18128293 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The spelling of 20430552401 in words is "twenty billion, four hundred thirty million, five hundred fifty-two thousand, four hundred one".