75149512840 has 32 divisors (see below), whose sum is σ = 171610087680. Its totient is φ = 29611150272.

The previous prime is 75149512831. The next prime is 75149512849. The reversal of 75149512840 is 4821594157.

It is an interprime number because it is at equal distance from previous prime (75149512831) and next prime (75149512849).

It is not an unprimeable number, because it can be changed into a prime (75149512849) 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, 14017752 + ... + 14023111.

It is an arithmetic number, because the mean of its divisors is an integer number (5362815240).

Almost surely, 2^75149512840 is an apocalyptic number.

It is an amenable number.

75149512840 is an abundant number, since it is smaller than the sum of its proper divisors (96460574840).

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

75149512840 is a wasteful number, since it uses less digits than its factorization.

75149512840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28040941 (or 28040937 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 46.

The spelling of 75149512840 in words is "seventy-five billion, one hundred forty-nine million, five hundred twelve thousand, eight hundred forty".