11383506780 has 96 divisors (see below), whose sum is σ = 32254227264. Its totient is φ = 2999476224.

The previous prime is 11383506769. The next prime is 11383506781. The reversal of 11383506780 is 8760538311.

It is a super-2 number, since 2×11383506780² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11383506781) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4963314 + ... + 4965606.

It is an arithmetic number, because the mean of its divisors is an integer number (335981534).

Almost surely, 2^11383506780 is an apocalyptic number.

11383506780 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 11383506780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16127113632).

11383506780 is an abundant number, since it is smaller than the sum of its proper divisors (20870720484).

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

11383506780 is a wasteful number, since it uses less digits than its factorization.

11383506780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3255 (or 3253 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 11383506780 in words is "eleven billion, three hundred eighty-three million, five hundred six thousand, seven hundred eighty".