5421257688 has 512 divisors, whose sum is σ = 19077120000. Its totient is φ = 1266693120.

The previous prime is 5421257683. The next prime is 5421257689. The reversal of 5421257688 is 8867521245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5421257683) 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, 39571156 + ... + 39571292.

It is an arithmetic number, because the mean of its divisors is an integer number (37260000).

Almost surely, 2^5421257688 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 5421257688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9538560000).

5421257688 is an abundant number, since it is smaller than the sum of its proper divisors (13655862312).

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

5421257688 is a wasteful number, since it uses less digits than its factorization.

5421257688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220 (or 202 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 48.

The square root of 5421257688 is about 73629.1904613924. The cubic root of 5421257688 is about 1756.7097714824.

The spelling of 5421257688 in words is "five billion, four hundred twenty-one million, two hundred fifty-seven thousand, six hundred eighty-eight".