53398396928 has 56 divisors (see below), whose sum is σ = 110473190280. Its totient is φ = 25778421760.

The previous prime is 53398396921. The next prime is 53398396939. The reversal of 53398396928 is 82969389335.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53398396921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125183 + ... + 349953.

Almost surely, 2^53398396928 is an apocalyptic number.

53398396928 is a gapful number since it is divisible by the number (58) 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 53398396928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55236595140).

53398396928 is an abundant number, since it is smaller than the sum of its proper divisors (57074793352).

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

53398396928 is an equidigital number, since it uses as much as digits as its factorization.

53398396928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224826 (or 224802 counting only the distinct ones).

The product of its digits is 75582720, while the sum is 65.

The spelling of 53398396928 in words is "fifty-three billion, three hundred ninety-eight million, three hundred ninety-six thousand, nine hundred twenty-eight".