11351377818 has 96 divisors (see below), whose sum is σ = 28900564992. Its totient is φ = 3184077600.

The previous prime is 11351377799. The next prime is 11351377859. The reversal of 11351377818 is 81877315311.

11351377818 is a `hidden beast` number, since 113 + 513 + 7 + 7 + 8 + 18 = 666.

It is a super-2 number, since 2×11351377818² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 100971 + ... + 181377.

It is an arithmetic number, because the mean of its divisors is an integer number (301047552).

Almost surely, 2^11351377818 is an apocalyptic number.

11351377818 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11351377818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14450282496).

11351377818 is an abundant number, since it is smaller than the sum of its proper divisors (17549187174).

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

11351377818 is a wasteful number, since it uses less digits than its factorization.

11351377818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80480 (or 80477 counting only the distinct ones).

The product of its digits is 141120, while the sum is 45.

The spelling of 11351377818 in words is "eleven billion, three hundred fifty-one million, three hundred seventy-seven thousand, eight hundred eighteen".