11772656747 has 16 divisors (see below), whose sum is σ = 12699257760. Its totient is φ = 10879195392.

The previous prime is 11772656741. The next prime is 11772656803. The reversal of 11772656747 is 74765627711.

It is a cyclic number.

It is not a de Polignac number, because 11772656747 - 2¹² = 11772652651 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11772656741) 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, 140423 + ... + 207999.

It is an arithmetic number, because the mean of its divisors is an integer number (793703610).

Almost surely, 2^11772656747 is an apocalyptic number.

11772656747 is a deficient number, since it is larger than the sum of its proper divisors (926601013).

11772656747 is a wasteful number, since it uses less digits than its factorization.

11772656747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67822.

The product of its digits is 3457440, while the sum is 53.

The spelling of 11772656747 in words is "eleven billion, seven hundred seventy-two million, six hundred fifty-six thousand, seven hundred forty-seven".