6536123465 has 16 divisors (see below), whose sum is σ = 7982740560. Its totient is φ = 5136203520.

The previous prime is 6536123449. The next prime is 6536123507. The reversal of 6536123465 is 5643216356.

It can be written as a sum of positive squares in 8 ways, for example, as 768176656 + 5767946809 = 27716^2 + 75947^2 .

It is not a de Polignac number, because 6536123465 - 2⁴ = 6536123449 is a prime.

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, 216731 + ... + 245039.

It is an arithmetic number, because the mean of its divisors is an integer number (498921285).

Almost surely, 2^6536123465 is an apocalyptic number.

It is an amenable number.

6536123465 is a deficient number, since it is larger than the sum of its proper divisors (1446617095).

6536123465 is a wasteful number, since it uses less digits than its factorization.

6536123465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29132.

The product of its digits is 388800, while the sum is 41.

The square root of 6536123465 is about 80846.2953078247. The cubic root of 6536123465 is about 1869.7064048590.

The spelling of 6536123465 in words is "six billion, five hundred thirty-six million, one hundred twenty-three thousand, four hundred sixty-five".