8353534999920 has 640 divisors, whose sum is σ = 30687477875712. Its totient is φ = 1857144422400.

The previous prime is 8353534999913. The next prime is 8353534999921. The reversal of 8353534999920 is 299994353538.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8353534999921) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 292917502 + ... + 292946018.

Almost surely, 2^{8353534999920} is an apocalyptic number.

8353534999920 is a gapful number since it is divisible by the number (80) 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 8353534999920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15343738937856).

8353534999920 is an abundant number, since it is smaller than the sum of its proper divisors (22333942875792).

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

8353534999920 is a wasteful number, since it uses less digits than its factorization.

8353534999920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28729 (or 28723 counting only the distinct ones).

The product of its (nonzero) digits is 283435200, while the sum is 69.

The spelling of 8353534999920 in words is "eight trillion, three hundred fifty-three billion, five hundred thirty-four million, nine hundred ninety-nine thousand, nine hundred twenty".