11639698380 has 240 divisors, whose sum is σ = 39565199520. Its totient is φ = 2853107712.

The previous prime is 11639698373. The next prime is 11639698417. The reversal of 11639698380 is 8389693611.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1179306 + ... + 1189134.

It is an arithmetic number, because the mean of its divisors is an integer number (164854998).

Almost surely, 2^11639698380 is an apocalyptic number.

11639698380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11639698380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19782599760).

11639698380 is an abundant number, since it is smaller than the sum of its proper divisors (27925501140).

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

11639698380 is a wasteful number, since it uses less digits than its factorization.

11639698380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9910 (or 9899 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 54.

The spelling of 11639698380 in words is "eleven billion, six hundred thirty-nine million, six hundred ninety-eight thousand, three hundred eighty".