6123645513 has 12 divisors (see below), whose sum is σ = 8847082608. Its totient is φ = 4081591800.

The previous prime is 6123645499. The next prime is 6123645553. The reversal of 6123645513 is 3155463216.

6123645513 is a `hidden beast` number, since 6 + 1 + 2 + 3 + 645 + 5 + 1 + 3 = 666.

It is not a de Polignac number, because 6123645513 - 2⁸ = 6123645257 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (6123645553) 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, 21895 + ... + 112812.

It is an arithmetic number, because the mean of its divisors is an integer number (737256884).

Almost surely, 2^6123645513 is an apocalyptic number.

It is an amenable number.

6123645513 is a deficient number, since it is larger than the sum of its proper divisors (2723437095).

6123645513 is a wasteful number, since it uses less digits than its factorization.

6123645513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139764 (or 139761 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 6123645513 is about 78253.7252340104. The cubic root of 6123645513 is about 1829.5179748096.

The spelling of 6123645513 in words is "six billion, one hundred twenty-three million, six hundred forty-five thousand, five hundred thirteen".