5431245806865 has 64 divisors (see below), whose sum is σ = 8916452421120. Its totient is φ = 2822178078720.

The previous prime is 5431245806863. The next prime is 5431245806879. The reversal of 5431245806865 is 5686085421345.

It is not a de Polignac number, because 5431245806865 - 2¹ = 5431245806863 is a prime.

It is a super-2 number, since 2×5431245806865² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5431245806863) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 177517009 + ... + 177547601.

It is an arithmetic number, because the mean of its divisors is an integer number (139319569080).

Almost surely, 2^{5431245806865} is an apocalyptic number.

It is an amenable number.

5431245806865 is a deficient number, since it is larger than the sum of its proper divisors (3485206614255).

5431245806865 is a wasteful number, since it uses less digits than its factorization.

5431245806865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32634.

The product of its (nonzero) digits is 27648000, while the sum is 57.

The spelling of 5431245806865 in words is "five trillion, four hundred thirty-one billion, two hundred forty-five million, eight hundred six thousand, eight hundred sixty-five".