20100132345 has 32 divisors (see below), whose sum is σ = 32738181120. Its totient is φ = 10528839360.

The previous prime is 20100132341. The next prime is 20100132361. The reversal of 20100132345 is 54323100102.

It is not a de Polignac number, because 20100132345 - 2² = 20100132341 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20100132341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 181932 + ... + 270738.

It is an arithmetic number, because the mean of its divisors is an integer number (1023068160).

Almost surely, 2^20100132345 is an apocalyptic number.

It is an amenable number.

20100132345 is a deficient number, since it is larger than the sum of its proper divisors (12638048775).

20100132345 is a wasteful number, since it uses less digits than its factorization.

20100132345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89085.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 20100132345 its reverse (54323100102), we get a palindrome (74423232447).

The spelling of 20100132345 in words is "twenty billion, one hundred million, one hundred thirty-two thousand, three hundred forty-five".