2100885496728 has 64 divisors (see below), whose sum is σ = 5345426680320. Its totient is φ = 687897360000.

The previous prime is 2100885496727. The next prime is 2100885496729. The reversal of 2100885496728 is 8276945880012.

It is an interprime number because it is at equal distance from previous prime (2100885496727) and next prime (2100885496729).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100885496727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144051 + ... + 2054877.

It is an arithmetic number, because the mean of its divisors is an integer number (83522291880).

Almost surely, 2^{2100885496728} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2100885496728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2672713340160).

2100885496728 is an abundant number, since it is smaller than the sum of its proper divisors (3244541183592).

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

2100885496728 is a wasteful number, since it uses less digits than its factorization.

2100885496728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1911648 (or 1911644 counting only the distinct ones).

The product of its (nonzero) digits is 15482880, while the sum is 60.

The spelling of 2100885496728 in words is "two trillion, one hundred billion, eight hundred eighty-five million, four hundred ninety-six thousand, seven hundred twenty-eight".