1815116121627 has 8 divisors (see below), whose sum is σ = 2420161505280. Its totient is φ = 1210074076200.

The previous prime is 1815116121601. The next prime is 1815116121631. The reversal of 1815116121627 is 7261216115181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1815116121627 - 2⁷ = 1815116121499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1815116121527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1028002 + ... + 2164952.

It is an arithmetic number, because the mean of its divisors is an integer number (302520188160).

Almost surely, 2^{1815116121627} is an apocalyptic number.

1815116121627 is a deficient number, since it is larger than the sum of its proper divisors (605045383653).

1815116121627 is a wasteful number, since it uses less digits than its factorization.

1815116121627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1669113.

The product of its digits is 40320, while the sum is 42.

The spelling of 1815116121627 in words is "one trillion, eight hundred fifteen billion, one hundred sixteen million, one hundred twenty-one thousand, six hundred twenty-seven".