11097778680 has 128 divisors (see below), whose sum is σ = 37041883200. Its totient is φ = 2955465216.

The previous prime is 11097778649. The next prime is 11097778717. The reversal of 11097778680 is 8687779011.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 854314 + ... + 867206.

Almost surely, 2^11097778680 is an apocalyptic number.

11097778680 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 11097778680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18520941600).

11097778680 is an abundant number, since it is smaller than the sum of its proper divisors (25944104520).

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

11097778680 is a wasteful number, since it uses less digits than its factorization.

11097778680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13710 (or 13700 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 54.

The spelling of 11097778680 in words is "eleven billion, ninety-seven million, seven hundred seventy-eight thousand, six hundred eighty".