1226633660541 has 24 divisors (see below), whose sum is σ = 1775356124256. Its totient is φ = 816117144480.

The previous prime is 1226633660537. The next prime is 1226633660569. The reversal of 1226633660541 is 1450663366221.

1226633660541 is a `hidden beast` number, since 1 + 2 + 2 + 6 + 6 + 3 + 36 + 605 + 4 + 1 = 666.

It is not a de Polignac number, because 1226633660541 - 2² = 1226633660537 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226633660501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21828106 + ... + 21884228.

It is an arithmetic number, because the mean of its divisors is an integer number (73973171844).

Almost surely, 2^{1226633660541} is an apocalyptic number.

It is an amenable number.

1226633660541 is a deficient number, since it is larger than the sum of its proper divisors (548722463715).

1226633660541 is a wasteful number, since it uses less digits than its factorization.

1226633660541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60953 (or 60950 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 45.

The spelling of 1226633660541 in words is "one trillion, two hundred twenty-six billion, six hundred thirty-three million, six hundred sixty thousand, five hundred forty-one".