7440375321 has 12 divisors (see below), whose sum is σ = 10772863920. Its totient is φ = 4948409400.

The previous prime is 7440375307. The next prime is 7440375331. The reversal of 7440375321 is 1235730447.

It is not a de Polignac number, because 7440375321 - 2¹⁰ = 7440374297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7440375331) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 982755 + ... + 990296.

It is an arithmetic number, because the mean of its divisors is an integer number (897738660).

Almost surely, 2^7440375321 is an apocalyptic number.

It is an amenable number.

7440375321 is a deficient number, since it is larger than the sum of its proper divisors (3332488599).

7440375321 is a wasteful number, since it uses less digits than its factorization.

7440375321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1973476 (or 1973473 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 36.

The square root of 7440375321 is about 86257.6102207799. The cubic root of 7440375321 is about 1952.2328419204.

The spelling of 7440375321 in words is "seven billion, four hundred forty million, three hundred seventy-five thousand, three hundred twenty-one".