2135448678 has 16 divisors (see below), whose sum is σ = 4659160896. Its totient is φ = 647105640.

The previous prime is 2135448661. The next prime is 2135448683. The reversal of 2135448678 is 8768445312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16177576 + ... + 16177707.

It is an arithmetic number, because the mean of its divisors is an integer number (291197556).

Almost surely, 2^2135448678 is an apocalyptic number.

2135448678 is an abundant number, since it is smaller than the sum of its proper divisors (2523712218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2135448678 is a wasteful number, since it uses less digits than its factorization.

2135448678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32355299.

The product of its digits is 1290240, while the sum is 48.

The square root of 2135448678 is about 46210.9151391746. The cubic root of 2135448678 is about 1287.7445270058.

It can be divided in two parts, 213544 and 8678, that added together give a palindrome (222222).

The spelling of 2135448678 in words is "two billion, one hundred thirty-five million, four hundred forty-eight thousand, six hundred seventy-eight".