2017902639828 has 96 divisors (see below), whose sum is σ = 5027783491584. Its totient is φ = 627692502528.

The previous prime is 2017902639773. The next prime is 2017902639829. The reversal of 2017902639828 is 8289362097102.

It is a happy number.

It is a super-2 number, since 2×2017902639828² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2017902639829) 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, 43165275 + ... + 43211997.

It is an arithmetic number, because the mean of its divisors is an integer number (52372744704).

Almost surely, 2^{2017902639828} 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 2017902639828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2513891745792).

2017902639828 is an abundant number, since it is smaller than the sum of its proper divisors (3009880851756).

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

2017902639828 is a wasteful number, since it uses less digits than its factorization.

2017902639828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48541 (or 48539 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 57.

The spelling of 2017902639828 in words is "two trillion, seventeen billion, nine hundred two million, six hundred thirty-nine thousand, eight hundred twenty-eight".