48278131465 has 4 divisors (see below), whose sum is σ = 57933757764. Its totient is φ = 38622505168.

The previous prime is 48278131459. The next prime is 48278131589. The reversal of 48278131465 is 56413187284.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8914381056 + 39363750409 = 94416^2 + 198403^2 .

It is a cyclic number.

It is not a de Polignac number, because 48278131465 - 2¹³ = 48278123273 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4827813142 + ... + 4827813151.

It is an arithmetic number, because the mean of its divisors is an integer number (14483439441).

Almost surely, 2^48278131465 is an apocalyptic number.

It is an amenable number.

48278131465 is a deficient number, since it is larger than the sum of its proper divisors (9655626299).

48278131465 is an equidigital number, since it uses as much as digits as its factorization.

48278131465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9655626298.

The product of its digits is 1290240, while the sum is 49.

The spelling of 48278131465 in words is "forty-eight billion, two hundred seventy-eight million, one hundred thirty-one thousand, four hundred sixty-five".