11854881380 has 12 divisors (see below), whose sum is σ = 24895250940. Its totient is φ = 4741952544.

The previous prime is 11854881373. The next prime is 11854881383. The reversal of 11854881380 is 8318845811.

It can be written as a sum of positive squares in 2 ways, for example, as 6442630756 + 5412250624 = 80266^2 + 73568^2 .

It is not an unprimeable number, because it can be changed into a prime (11854881383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296372015 + ... + 296372054.

It is an arithmetic number, because the mean of its divisors is an integer number (2074604245).

Almost surely, 2^11854881380 is an apocalyptic number.

11854881380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11854881380 is an abundant number, since it is smaller than the sum of its proper divisors (13040369560).

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

11854881380 is a wasteful number, since it uses less digits than its factorization.

11854881380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592744078 (or 592744076 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 47.

The spelling of 11854881380 in words is "eleven billion, eight hundred fifty-four million, eight hundred eighty-one thousand, three hundred eighty".