11780722628 has 24 divisors (see below), whose sum is σ = 21832441344. Its totient is φ = 5542992000.

The previous prime is 11780722621. The next prime is 11780722663. The reversal of 11780722628 is 82622708711.

It is not an unprimeable number, because it can be changed into a prime (11780722621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 662453 + ... + 680003.

It is an arithmetic number, because the mean of its divisors is an integer number (909685056).

Almost surely, 2^11780722628 is an apocalyptic number.

It is an amenable number.

11780722628 is a deficient number, since it is larger than the sum of its proper divisors (10051718716).

11780722628 is a wasteful number, since it uses less digits than its factorization.

11780722628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27443 (or 27441 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 44.

The spelling of 11780722628 in words is "eleven billion, seven hundred eighty million, seven hundred twenty-two thousand, six hundred twenty-eight".