7343644521 has 16 divisors (see below), whose sum is σ = 10033365888. Its totient is φ = 4774915200.

The previous prime is 7343644501. The next prime is 7343644531. The reversal of 7343644521 is 1254463437.

It is not a de Polignac number, because 7343644521 - 2¹⁰ = 7343643497 is a prime.

It is a super-2 number, since 2×7343644521² (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 7343644521.

It is not an unprimeable number, because it can be changed into a prime (7343644501) 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, 533295 + ... + 546891.

It is an arithmetic number, because the mean of its divisors is an integer number (627085368).

Almost surely, 2^7343644521 is an apocalyptic number.

It is an amenable number.

7343644521 is a deficient number, since it is larger than the sum of its proper divisors (2689721367).

7343644521 is a wasteful number, since it uses less digits than its factorization.

7343644521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18032.

The product of its digits is 241920, while the sum is 39.

The square root of 7343644521 is about 85695.0670750656. The cubic root of 7343644521 is about 1943.7357182244.

The spelling of 7343644521 in words is "seven billion, three hundred forty-three million, six hundred forty-four thousand, five hundred twenty-one".