1228886345515 has 4 divisors (see below), whose sum is σ = 1474663614624. Its totient is φ = 983109076408.

The previous prime is 1228886345497. The next prime is 1228886345543. The reversal of 1228886345515 is 5155436888221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1228886345515 - 2³¹ = 1226738861867 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1228886345515.

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, 122888634547 + ... + 122888634556.

It is an arithmetic number, because the mean of its divisors is an integer number (368665903656).

Almost surely, 2^{1228886345515} is an apocalyptic number.

1228886345515 is a deficient number, since it is larger than the sum of its proper divisors (245777269109).

1228886345515 is an equidigital number, since it uses as much as digits as its factorization.

1228886345515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245777269108.

The product of its digits is 18432000, while the sum is 58.

The spelling of 1228886345515 in words is "one trillion, two hundred twenty-eight billion, eight hundred eighty-six million, three hundred forty-five thousand, five hundred fifteen".