75012421078 has 32 divisors (see below), whose sum is σ = 135508492800. Its totient is φ = 30422931264.

The previous prime is 75012421039. The next prime is 75012421079. The reversal of 75012421078 is 87012421057.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75012421079) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91026 + ... + 397882.

It is an arithmetic number, because the mean of its divisors is an integer number (4234640400).

Almost surely, 2^75012421078 is an apocalyptic number.

75012421078 is a deficient number, since it is larger than the sum of its proper divisors (60496071722).

75012421078 is a wasteful number, since it uses less digits than its factorization.

75012421078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307804.

The product of its (nonzero) digits is 31360, while the sum is 37.

The spelling of 75012421078 in words is "seventy-five billion, twelve million, four hundred twenty-one thousand, seventy-eight".