20038172700 has 864 divisors, whose sum is σ = 78198994944. Its totient is φ = 3917168640.

The previous prime is 20038172647. The next prime is 20038172719. The reversal of 20038172700 is 727183002.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 206579052 + ... + 206579148.

It is an arithmetic number, because the mean of its divisors is an integer number (90508096).

Almost surely, 2^20038172700 is an apocalyptic number.

20038172700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20038172700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39099497472).

20038172700 is an abundant number, since it is smaller than the sum of its proper divisors (58160822244).

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

20038172700 is a wasteful number, since it uses less digits than its factorization.

20038172700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 30.

The spelling of 20038172700 in words is "twenty billion, thirty-eight million, one hundred seventy-two thousand, seven hundred".