11388485380 has 12 divisors (see below), whose sum is σ = 23915819340. Its totient is φ = 4555394144.

The previous prime is 11388485359. The next prime is 11388485483. The reversal of 11388485380 is 8358488311.

It can be written as a sum of positive squares in 2 ways, for example, as 6689931264 + 4698554116 = 81792^2 + 68546^2 .

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, 284712115 + ... + 284712154.

It is an arithmetic number, because the mean of its divisors is an integer number (1992984945).

Almost surely, 2^11388485380 is an apocalyptic number.

11388485380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11388485380 is an abundant number, since it is smaller than the sum of its proper divisors (12527333960).

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

11388485380 is a wasteful number, since it uses less digits than its factorization.

11388485380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569424278 (or 569424276 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 49.

The spelling of 11388485380 in words is "eleven billion, three hundred eighty-eight million, four hundred eighty-five thousand, three hundred eighty".