75199472640 has 528 divisors, whose sum is σ = 273695625216. Its totient is φ = 19066060800.

The previous prime is 75199472629. The next prime is 75199472723. The reversal of 75199472640 is 4627499157.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 87136849 + ... + 87137711.

Almost surely, 2^75199472640 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 75199472640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136847812608).

75199472640 is an abundant number, since it is smaller than the sum of its proper divisors (198496152576).

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

75199472640 is a wasteful number, since it uses less digits than its factorization.

75199472640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986 (or 965 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 54.

The spelling of 75199472640 in words is "seventy-five billion, one hundred ninety-nine million, four hundred seventy-two thousand, six hundred forty".