20100730638 has 8 divisors (see below), whose sum is σ = 40201461288. Its totient is φ = 6700243544.

The previous prime is 20100730631. The next prime is 20100730651. The reversal of 20100730638 is 83603700102.

It is a sphenic number, since it is the product of 3 distinct primes.

20100730638 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100730631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1675060881 + ... + 1675060892.

It is an arithmetic number, because the mean of its divisors is an integer number (5025182661).

Almost surely, 2^20100730638 is an apocalyptic number.

20100730638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20100730638 is a wasteful number, since it uses less digits than its factorization.

20100730638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3350121778.

The product of its (nonzero) digits is 6048, while the sum is 30.

The spelling of 20100730638 in words is "twenty billion, one hundred million, seven hundred thirty thousand, six hundred thirty-eight".