1245775320218 has 16 divisors (see below), whose sum is σ = 2195352313056. Its totient is φ = 522702931440.

The previous prime is 1245775320217. The next prime is 1245775320263. The reversal of 1245775320218 is 8120235775421.

It is a super-2 number, since 2×1245775320218² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1245775320217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2177928596 + ... + 2177929167.

It is an arithmetic number, because the mean of its divisors is an integer number (137209519566).

Almost surely, 2^{1245775320218} is an apocalyptic number.

1245775320218 is a deficient number, since it is larger than the sum of its proper divisors (949576992838).

1245775320218 is a wasteful number, since it uses less digits than its factorization.

1245775320218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4355857789.

The product of its (nonzero) digits is 940800, while the sum is 47.

The spelling of 1245775320218 in words is "one trillion, two hundred forty-five billion, seven hundred seventy-five million, three hundred twenty thousand, two hundred eighteen".