1252479141218 has 18 divisors (see below), whose sum is σ = 1910169517347. Its totient is φ = 615925866960.

The previous prime is 1252479141209. The next prime is 1252479141223. The reversal of 1252479141218 is 8121419742521.

It can be written as a sum of positive squares in 5 ways, for example, as 333271826209 + 919207315009 = 577297^2 + 958753^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=791353.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 96538580 + ... + 96551552.

Almost surely, 2^{1252479141218} is an apocalyptic number.

1252479141218 is a deficient number, since it is larger than the sum of its proper divisors (657690376129).

1252479141218 is an frugal number, since it uses more digits than its factorization.

1252479141218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26070 (or 13036 counting only the distinct ones).

The product of its digits is 322560, while the sum is 47.

The spelling of 1252479141218 in words is "one trillion, two hundred fifty-two billion, four hundred seventy-nine million, one hundred forty-one thousand, two hundred eighteen".