2100001000038 has 64 divisors (see below), whose sum is σ = 4391344226304. Its totient is φ = 668232180000.

The previous prime is 2100001000003. The next prime is 2100001000039. The reversal of 2100001000038 is 8300001000012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2100000999990 and 2100001000026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100001000039) 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, 424154463 + ... + 424159413.

It is an arithmetic number, because the mean of its divisors is an integer number (68614753536).

Almost surely, 2^{2100001000038} is an apocalyptic number.

2100001000038 is an abundant number, since it is smaller than the sum of its proper divisors (2291343226266).

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

2100001000038 is a wasteful number, since it uses less digits than its factorization.

2100001000038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10481.

The product of its (nonzero) digits is 48, while the sum is 15.

The spelling of 2100001000038 in words is "two trillion, one hundred billion, one million, thirty-eight", and thus it is an aban number.