75818312481 has 8 divisors (see below), whose sum is σ = 106411666720. Its totient is φ = 47885249952.

The previous prime is 75818312477. The next prime is 75818312543. The reversal of 75818312481 is 18421381857.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 75818312481 - 2² = 75818312477 is a prime.

It is a super-2 number, since 2×75818312481² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75818312481.

It is not an unprimeable number, because it can be changed into a prime (75818312411) 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, 665072860 + ... + 665072973.

It is an arithmetic number, because the mean of its divisors is an integer number (13301458340).

Almost surely, 2^75818312481 is an apocalyptic number.

It is an amenable number.

75818312481 is a deficient number, since it is larger than the sum of its proper divisors (30593354239).

75818312481 is a wasteful number, since it uses less digits than its factorization.

75818312481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330145855.

The product of its digits is 430080, while the sum is 48.

The spelling of 75818312481 in words is "seventy-five billion, eight hundred eighteen million, three hundred twelve thousand, four hundred eighty-one".