75998331648 has 252 divisors, whose sum is σ = 239427639640. Its totient is φ = 23998353408.

The previous prime is 75998331611. The next prime is 75998331653. The reversal of 75998331648 is 84613389957.

75998331648 is a `hidden beast` number, since 7 + 599 + 8 + 3 + 31 + 6 + 4 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 3535140 + ... + 3556572.

Almost surely, 2^75998331648 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 75998331648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119713819820).

75998331648 is an abundant number, since it is smaller than the sum of its proper divisors (163429307992).

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

75998331648 is an equidigital number, since it uses as much as digits as its factorization.

75998331648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21486 (or 21457 counting only the distinct ones).

The product of its digits is 39191040, while the sum is 63.

The spelling of 75998331648 in words is "seventy-five billion, nine hundred ninety-eight million, three hundred thirty-one thousand, six hundred forty-eight".