7221436464679 has 16 divisors (see below), whose sum is σ = 7372523128320. Its totient is φ = 7071410223360.

The previous prime is 7221436464677. The next prime is 7221436464757. The reversal of 7221436464679 is 9764646341227.

It is not a de Polignac number, because 7221436464679 - 2¹ = 7221436464677 is a prime.

It is a super-2 number, since 2×7221436464679² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7221436464677) 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, 291562554 + ... + 291587320.

It is an arithmetic number, because the mean of its divisors is an integer number (460782695520).

Almost surely, 2^{7221436464679} is an apocalyptic number.

7221436464679 is a deficient number, since it is larger than the sum of its proper divisors (151086663641).

7221436464679 is a wasteful number, since it uses less digits than its factorization.

7221436464679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45930.

The product of its digits is 73156608, while the sum is 61.

The spelling of 7221436464679 in words is "seven trillion, two hundred twenty-one billion, four hundred thirty-six million, four hundred sixty-four thousand, six hundred seventy-nine".