20051100672 has 88 divisors (see below), whose sum is σ = 56256472800. Its totient is φ = 6331908096.

The previous prime is 20051100631. The next prime is 20051100677. The reversal of 20051100672 is 27600115002.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (20051100677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113397 + ... + 230132.

It is an arithmetic number, because the mean of its divisors is an integer number (639278100).

Almost surely, 2^20051100672 is an apocalyptic number.

It is an amenable number.

20051100672 is an abundant number, since it is smaller than the sum of its proper divisors (36205372128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20051100672 is a wasteful number, since it uses less digits than its factorization.

20051100672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343571 (or 343553 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

Adding to 20051100672 its reverse (27600115002), we get a palindrome (47651215674).

The spelling of 20051100672 in words is "twenty billion, fifty-one million, one hundred thousand, six hundred seventy-two".