11335647961 has 9 divisors (see below), whose sum is σ = 12461131893. Its totient is φ = 10304069820.

The previous prime is 11335647941. The next prime is 11335648013. The reversal of 11335647961 is 16974653311.

The square root of 11335647961 is 106469.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 11335647961 - 2⁵ = 11335647929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11335647941) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1166320 + ... + 1175998.

Almost surely, 2^11335647961 is an apocalyptic number.

11335647961 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11335647961 is the 106469-th square number.

11335647961 is the 53235-th centered octagonal number.

It is an amenable number.

11335647961 is a deficient number, since it is larger than the sum of its proper divisors (1125483932).

11335647961 is an frugal number, since it uses more digits than its factorization.

11335647961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19380 (or 9690 counting only the distinct ones).

The product of its digits is 408240, while the sum is 46.

The spelling of 11335647961 in words is "eleven billion, three hundred thirty-five million, six hundred forty-seven thousand, nine hundred sixty-one".