7045318644 has 72 divisors (see below), whose sum is σ = 20343919680. Its totient is φ = 1858102272.

The previous prime is 7045318639. The next prime is 7045318649. The reversal of 7045318644 is 4468135407.

It is an interprime number because it is at equal distance from previous prime (7045318639) and next prime (7045318649).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 7045318596 and 7045318605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7045318649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 233949 + ... + 262340.

It is an arithmetic number, because the mean of its divisors is an integer number (282554440).

Almost surely, 2^7045318644 is an apocalyptic number.

It is an amenable number.

7045318644 is an abundant number, since it is smaller than the sum of its proper divisors (13298601036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7045318644 is a wasteful number, since it uses less digits than its factorization.

7045318644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496329 (or 496314 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 42.

The square root of 7045318644 is about 83936.3964201466. The cubic root of 7045318644 is about 1917.0504701276.

The spelling of 7045318644 in words is "seven billion, forty-five million, three hundred eighteen thousand, six hundred forty-four".