11681377763201 has 4 divisors (see below), whose sum is σ = 11966289416004. Its totient is φ = 11396466110400.

The previous prime is 11681377763197. The next prime is 11681377763227. The reversal of 11681377763201 is 10236777318611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 235978322176 + 11445399441025 = 485776^2 + 3383105^2 .

It is a cyclic number.

It is not a de Polignac number, because 11681377763201 - 2² = 11681377763197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11681377763801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142455826340 + ... + 142455826421.

It is an arithmetic number, because the mean of its divisors is an integer number (2991572354001).

Almost surely, 2^{11681377763201} is an apocalyptic number.

It is an amenable number.

11681377763201 is a deficient number, since it is larger than the sum of its proper divisors (284911652803).

11681377763201 is an equidigital number, since it uses as much as digits as its factorization.

11681377763201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284911652802.

The product of its (nonzero) digits is 1778112, while the sum is 53.

The spelling of 11681377763201 in words is "eleven trillion, six hundred eighty-one billion, three hundred seventy-seven million, seven hundred sixty-three thousand, two hundred one".