75421413946 has 4 divisors (see below), whose sum is σ = 113132120922. Its totient is φ = 37710706972.

The previous prime is 75421413901. The next prime is 75421413959. The reversal of 75421413946 is 64931412457.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 40566390921 + 34855023025 = 201411^2 + 186695^2 .

It is a super-2 number, since 2×75421413946² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 75421413896 and 75421413905.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18855353485 + ... + 18855353488.

Almost surely, 2^75421413946 is an apocalyptic number.

75421413946 is a deficient number, since it is larger than the sum of its proper divisors (37710706976).

75421413946 is a wasteful number, since it uses less digits than its factorization.

75421413946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37710706975.

The product of its digits is 725760, while the sum is 46.

The spelling of 75421413946 in words is "seventy-five billion, four hundred twenty-one million, four hundred thirteen thousand, nine hundred forty-six".