75149998208 has 64 divisors (see below), whose sum is σ = 150676554240. Its totient is φ = 37333632000.

The previous prime is 75149998207. The next prime is 75149998277. The reversal of 75149998208 is 80289994157.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×75149998208² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (75149998207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31561178 + ... + 31563558.

It is an arithmetic number, because the mean of its divisors is an integer number (2354321160).

Almost surely, 2^75149998208 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 75149998208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75338277120).

75149998208 is an abundant number, since it is smaller than the sum of its proper divisors (75526556032).

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

75149998208 is a wasteful number, since it uses less digits than its factorization.

75149998208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3877 (or 3865 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 62.

The spelling of 75149998208 in words is "seventy-five billion, one hundred forty-nine million, nine hundred ninety-eight thousand, two hundred eight".