1219145515688 has 16 divisors (see below), whose sum is σ = 2285954909280. Its totient is φ = 609557539888.

The previous prime is 1219145515667. The next prime is 1219145515729. The reversal of 1219145515688 is 8865155419121.

It is a super-2 number, since 2×1219145515688² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1558106 + ... + 2205897.

It is an arithmetic number, because the mean of its divisors is an integer number (142872181830).

Almost surely, 2^{1219145515688} is an apocalyptic number.

It is an amenable number.

1219145515688 is a deficient number, since it is larger than the sum of its proper divisors (1066809393592).

1219145515688 is a wasteful number, since it uses less digits than its factorization.

1219145515688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3804496 (or 3804492 counting only the distinct ones).

The product of its digits is 3456000, while the sum is 56.

The spelling of 1219145515688 in words is "one trillion, two hundred nineteen billion, one hundred forty-five million, five hundred fifteen thousand, six hundred eighty-eight".