6945401745 has 24 divisors (see below), whose sum is σ = 12236056872. Its totient is φ = 3643488000.

The previous prime is 6945401699. The next prime is 6945401791. The reversal of 6945401745 is 5471045496.

6945401745 is a `hidden beast` number, since 6 + 94 + 540 + 17 + 4 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (6945401699) and next prime (6945401791).

It can be written as a sum of positive squares in 4 ways, for example, as 822026241 + 6123375504 = 28671^2 + 78252^2 .

It is not a de Polignac number, because 6945401745 - 2¹² = 6945397649 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 6945401745.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1262356 + ... + 1267845.

It is an arithmetic number, because the mean of its divisors is an integer number (509835703).

Almost surely, 2^6945401745 is an apocalyptic number.

It is an amenable number.

6945401745 is a deficient number, since it is larger than the sum of its proper divisors (5290655127).

6945401745 is a wasteful number, since it uses less digits than its factorization.

6945401745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2530273 (or 2530270 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The square root of 6945401745 is about 83339.0769387326. The cubic root of 6945401745 is about 1907.9447337406.

The spelling of 6945401745 in words is "six billion, nine hundred forty-five million, four hundred one thousand, seven hundred forty-five".