75387911808 has 256 divisors, whose sum is σ = 239954918400. Its totient is φ = 20700979200.

The previous prime is 75387911791. The next prime is 75387911839. The reversal of 75387911808 is 80811978357.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1825468 + ... + 1866308.

It is an arithmetic number, because the mean of its divisors is an integer number (937323900).

Almost surely, 2^75387911808 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 75387911808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119977459200).

75387911808 is an abundant number, since it is smaller than the sum of its proper divisors (164567006592).

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

75387911808 is a wasteful number, since it uses less digits than its factorization.

75387911808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40911 (or 40899 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 57.

The spelling of 75387911808 in words is "seventy-five billion, three hundred eighty-seven million, nine hundred eleven thousand, eight hundred eight".