11528345278 has 4 divisors (see below), whose sum is σ = 17292517920. Its totient is φ = 5764172638.

The previous prime is 11528345249. The next prime is 11528345291. The reversal of 11528345278 is 87254382511.

It is a happy number.

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

It is a congruent 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 as a sum of consecutive naturals, namely, 2882086318 + ... + 2882086321.

It is an arithmetic number, because the mean of its divisors is an integer number (4323129480).

Almost surely, 2^11528345278 is an apocalyptic number.

11528345278 is a deficient number, since it is larger than the sum of its proper divisors (5764172642).

11528345278 is an equidigital number, since it uses as much as digits as its factorization.

11528345278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5764172641.

The product of its digits is 537600, while the sum is 46.

The spelling of 11528345278 in words is "eleven billion, five hundred twenty-eight million, three hundred forty-five thousand, two hundred seventy-eight".