7345421505 has 12 divisors (see below), whose sum is σ = 12732064020. Its totient is φ = 3917558112.

The previous prime is 7345421491. The next prime is 7345421521. The reversal of 7345421505 is 5051245437.

7345421505 is a `hidden beast` number, since 73 + 45 + 42 + 1 + 505 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1598720256 + 5746701249 = 39984^2 + 75807^2 .

It is not a de Polignac number, because 7345421505 - 2⁸ = 7345421249 is a prime.

It is a super-2 number, since 2×7345421505² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7345421505.

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 11 ways as a sum of consecutive naturals, for example, 81615750 + ... + 81615839.

It is an arithmetic number, because the mean of its divisors is an integer number (1061005335).

Almost surely, 2^7345421505 is an apocalyptic number.

It is an amenable number.

7345421505 is a deficient number, since it is larger than the sum of its proper divisors (5386642515).

7345421505 is a wasteful number, since it uses less digits than its factorization.

7345421505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163231600 (or 163231597 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 36.

The square root of 7345421505 is about 85705.4345126375. The cubic root of 7345421505 is about 1943.8924845596.

The spelling of 7345421505 in words is "seven billion, three hundred forty-five million, four hundred twenty-one thousand, five hundred five".