1115656421215 has 16 divisors (see below), whose sum is σ = 1558911832128. Its totient is φ = 750587175936.

The previous prime is 1115656421149. The next prime is 1115656421221. The reversal of 1115656421215 is 5121246565111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1115656421215 - 2¹⁷ = 1115656290143 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300714162 + ... + 300717871.

It is an arithmetic number, because the mean of its divisors is an integer number (97431989508).

Almost surely, 2^{1115656421215} is an apocalyptic number.

1115656421215 is a deficient number, since it is larger than the sum of its proper divisors (443255410913).

1115656421215 is an equidigital number, since it uses as much as digits as its factorization.

1115656421215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601432098.

The product of its digits is 72000, while the sum is 40.

The spelling of 1115656421215 in words is "one trillion, one hundred fifteen billion, six hundred fifty-six million, four hundred twenty-one thousand, two hundred fifteen".