11194802780 has 48 divisors (see below), whose sum is σ = 27322928640. Its totient is φ = 3773160768.

The previous prime is 11194802767. The next prime is 11194802783. The reversal of 11194802780 is 8720849111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11194802783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 669392 + ... + 685911.

It is an arithmetic number, because the mean of its divisors is an integer number (569227680).

Almost surely, 2^11194802780 is an apocalyptic number.

11194802780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11194802780 is an abundant number, since it is smaller than the sum of its proper divisors (16128125860).

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

11194802780 is a wasteful number, since it uses less digits than its factorization.

11194802780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355378 (or 1355376 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 41.

The spelling of 11194802780 in words is "eleven billion, one hundred ninety-four million, eight hundred two thousand, seven hundred eighty".