1217845053061 has 32 divisors (see below), whose sum is σ = 1523673256448. Its totient is φ = 947639658240.

The previous prime is 1217845052993. The next prime is 1217845053067. The reversal of 1217845053061 is 1603505487121.

It is a cyclic number.

It is not a de Polignac number, because 1217845053061 - 2¹³ = 1217845044869 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1217845052999 and 1217845053017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1217845053067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60812296 + ... + 60832318.

It is an arithmetic number, because the mean of its divisors is an integer number (47614789264).

Almost surely, 2^{1217845053061} is an apocalyptic number.

It is an amenable number.

1217845053061 is a deficient number, since it is larger than the sum of its proper divisors (305828203387).

1217845053061 is a wasteful number, since it uses less digits than its factorization.

1217845053061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31061.

The product of its (nonzero) digits is 201600, while the sum is 43.

The spelling of 1217845053061 in words is "one trillion, two hundred seventeen billion, eight hundred forty-five million, fifty-three thousand, sixty-one".