11371673538 has 16 divisors (see below), whose sum is σ = 25270385760. Its totient is φ = 3790557828.

The previous prime is 11371673513. The next prime is 11371673543. The reversal of 11371673538 is 83537617311.

11371673538 is a `hidden beast` number, since 1 + 1 + 37 + 16 + 73 + 538 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 11371673493 and 11371673502.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105293220 + ... + 105293327.

It is an arithmetic number, because the mean of its divisors is an integer number (1579399110).

Almost surely, 2^11371673538 is an apocalyptic number.

11371673538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11371673538 is an abundant number, since it is smaller than the sum of its proper divisors (13898712222).

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

11371673538 is a wasteful number, since it uses less digits than its factorization.

11371673538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210586558 (or 210586552 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The spelling of 11371673538 in words is "eleven billion, three hundred seventy-one million, six hundred seventy-three thousand, five hundred thirty-eight".