7145665445 has 16 divisors (see below), whose sum is σ = 9218154240. Its totient is φ = 5300432064.

The previous prime is 7145665427. The next prime is 7145665459. The reversal of 7145665445 is 5445665417.

It is a cyclic number.

It is not a de Polignac number, because 7145665445 - 2¹⁴ = 7145649061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a self number, because there is not a number n which added to its sum of digits gives 7145665445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 795722 + ... + 804651.

It is an arithmetic number, because the mean of its divisors is an integer number (576134640).

Almost surely, 2^7145665445 is an apocalyptic number.

It is an amenable number.

7145665445 is a deficient number, since it is larger than the sum of its proper divisors (2072488795).

7145665445 is a wasteful number, since it uses less digits than its factorization.

7145665445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600444.

The product of its digits is 2016000, while the sum is 47.

The square root of 7145665445 is about 84532.0379796915. The cubic root of 7145665445 is about 1926.1091439122.

The spelling of 7145665445 in words is "seven billion, one hundred forty-five million, six hundred sixty-five thousand, four hundred forty-five".