6479999745 has 32 divisors (see below), whose sum is σ = 10603560960. Its totient is φ = 3377688000.

The previous prime is 6479999731. The next prime is 6479999759. The reversal of 6479999745 is 5479999746.

It is an interprime number because it is at equal distance from previous prime (6479999731) and next prime (6479999759).

It is not a de Polignac number, because 6479999745 - 2²⁴ = 6463222529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6479999745.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 523336 + ... + 535574.

It is an arithmetic number, because the mean of its divisors is an integer number (331361280).

Almost surely, 2^6479999745 is an apocalyptic number.

It is an amenable number.

6479999745 is a deficient number, since it is larger than the sum of its proper divisors (4123561215).

6479999745 is a wasteful number, since it uses less digits than its factorization.

6479999745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13045.

The product of its digits is 154314720, while the sum is 69.

The square root of 6479999745 is about 80498.4456061109. The cubic root of 6479999745 is about 1864.3394791172.

Subtracting from 6479999745 its reverse (5479999746), we obtain a palindrome (999999999).

The spelling of 6479999745 in words is "six billion, four hundred seventy-nine million, nine hundred ninety-nine thousand, seven hundred forty-five".