20100109430 has 16 divisors (see below), whose sum is σ = 36518331600. Its totient is φ = 7964902752.

The previous prime is 20100109427. The next prime is 20100109433. The reversal of 20100109430 is 3490100102.

It is an interprime number because it is at equal distance from previous prime (20100109427) and next prime (20100109433).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100109433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9391505 + ... + 9393644.

It is an arithmetic number, because the mean of its divisors is an integer number (2282395725).

Almost surely, 2^20100109430 is an apocalyptic number.

20100109430 is a deficient number, since it is larger than the sum of its proper divisors (16418222170).

20100109430 is a wasteful number, since it uses less digits than its factorization.

20100109430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18785263.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 20100109430 its reverse (3490100102), we get a palindrome (23590209532).

The spelling of 20100109430 in words is "twenty billion, one hundred million, one hundred nine thousand, four hundred thirty".