11500505351378 has 8 divisors (see below), whose sum is σ = 17324795615868. Its totient is φ = 5725573479424.

The previous prime is 11500505351353. The next prime is 11500505351411. The reversal of 11500505351378 is 87315350500511.

It can be written as a sum of positive squares in 2 ways, for example, as 11422392368209 + 78112983169 = 3379703^2 + 279487^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12339597551 + ... + 12339598482.

Almost surely, 2^{11500505351378} is an apocalyptic number.

11500505351378 is a deficient number, since it is larger than the sum of its proper divisors (5824290264490).

11500505351378 is a wasteful number, since it uses less digits than its factorization.

11500505351378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24679196268.

The product of its (nonzero) digits is 315000, while the sum is 44.

Adding to 11500505351378 its reverse (87315350500511), we get a palindrome (98815855851889).

The spelling of 11500505351378 in words is "eleven trillion, five hundred billion, five hundred five million, three hundred fifty-one thousand, three hundred seventy-eight".