1223515415144 has 32 divisors (see below), whose sum is σ = 2502755128800. Its totient is φ = 556118934720.

The previous prime is 1223515415063. The next prime is 1223515415191. The reversal of 1223515415144 is 4415145153221.

It is a junction number, because it is equal to n+sod(n) for n = 1223515415098 and 1223515415107.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1789967 + ... + 2377185.

It is an arithmetic number, because the mean of its divisors is an integer number (78211097775).

Almost surely, 2^{1223515415144} is an apocalyptic number.

It is an amenable number.

1223515415144 is an abundant number, since it is smaller than the sum of its proper divisors (1279239713656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1223515415144 is a wasteful number, since it uses less digits than its factorization.

1223515415144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610913 (or 610909 counting only the distinct ones).

The product of its digits is 96000, while the sum is 38.

The spelling of 1223515415144 in words is "one trillion, two hundred twenty-three billion, five hundred fifteen million, four hundred fifteen thousand, one hundred forty-four".