75426327440 has 80 divisors (see below), whose sum is σ = 178001214336. Its totient is φ = 29717990400.

The previous prime is 75426327407. The next prime is 75426327463. The reversal of 75426327440 is 4472362457.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 75426327391 and 75426327400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6770675 + ... + 6781805.

Almost surely, 2^75426327440 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 75426327440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89000607168).

75426327440 is an abundant number, since it is smaller than the sum of its proper divisors (102574886896).

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

75426327440 is a wasteful number, since it uses less digits than its factorization.

75426327440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12408 (or 12402 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 44.

Adding to 75426327440 its reverse (4472362457), we get a palindrome (79898689897).

The spelling of 75426327440 in words is "seventy-five billion, four hundred twenty-six million, three hundred twenty-seven thousand, four hundred forty".