7421736545 has 16 divisors (see below), whose sum is σ = 9083783232. Its totient is φ = 5819161920.

The previous prime is 7421736533. The next prime is 7421736551. The reversal of 7421736545 is 5456371247.

It is a happy number.

It is not a de Polignac number, because 7421736545 - 2⁶ = 7421736481 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7421736496 and 7421736505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242894 + ... + 271736.

It is an arithmetic number, because the mean of its divisors is an integer number (567736452).

Almost surely, 2^7421736545 is an apocalyptic number.

It is an amenable number.

7421736545 is a deficient number, since it is larger than the sum of its proper divisors (1662046687).

7421736545 is a wasteful number, since it uses less digits than its factorization.

7421736545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29872.

The product of its digits is 705600, while the sum is 44.

The square root of 7421736545 is about 86149.5011303025. The cubic root of 7421736545 is about 1950.6013087517.

The spelling of 7421736545 in words is "seven billion, four hundred twenty-one million, seven hundred thirty-six thousand, five hundred forty-five".