1216057499917 has 8 divisors (see below), whose sum is σ = 1309608953856. Its totient is φ = 1122507270192.

The previous prime is 1216057499903. The next prime is 1216057499927. The reversal of 1216057499917 is 7199947506121.

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

It is a cyclic number.

It is not a de Polignac number, because 1216057499917 - 2¹¹ = 1216057497869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216057499927) 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, 3676548 + ... + 3993634.

It is an arithmetic number, because the mean of its divisors is an integer number (163701119232).

Almost surely, 2^{1216057499917} is an apocalyptic number.

It is an amenable number.

1216057499917 is a deficient number, since it is larger than the sum of its proper divisors (93551453939).

1216057499917 is a wasteful number, since it uses less digits than its factorization.

1216057499917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612107.

The product of its (nonzero) digits is 8573040, while the sum is 61.

The spelling of 1216057499917 in words is "one trillion, two hundred sixteen billion, fifty-seven million, four hundred ninety-nine thousand, nine hundred seventeen".