1663120628518 has 8 divisors (see below), whose sum is σ = 2498634480240. Its totient is φ = 830242468440.

The previous prime is 1663120628509. The next prime is 1663120628531. The reversal of 1663120628518 is 8158260213661.

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

It is a congruent number.

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, 658921333 + ... + 658923856.

It is an arithmetic number, because the mean of its divisors is an integer number (312329310030).

Almost surely, 2^{1663120628518} is an apocalyptic number.

1663120628518 is a deficient number, since it is larger than the sum of its proper divisors (835513851722).

1663120628518 is a wasteful number, since it uses less digits than its factorization.

1663120628518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317845822.

The product of its (nonzero) digits is 829440, while the sum is 49.

The spelling of 1663120628518 in words is "one trillion, six hundred sixty-three billion, one hundred twenty million, six hundred twenty-eight thousand, five hundred eighteen".